Added the underscore node_module.

node_modules/underscore/cjs/_baseCreate.js

@@ -0,0 +1,20 @@
+var isObject = require('./isObject.js');
+var _setup = require('./_setup.js');
+
+// Create a naked function reference for surrogate-prototype-swapping.
+function ctor() {
+  return function(){};
+}
+
+// An internal function for creating a new object that inherits from another.
+function baseCreate(prototype) {
+  if (!isObject(prototype)) return {};
+  if (_setup.nativeCreate) return _setup.nativeCreate(prototype);
+  var Ctor = ctor();
+  Ctor.prototype = prototype;
+  var result = new Ctor;
+  Ctor.prototype = null;
+  return result;
+}
+
+module.exports = baseCreate;

node_modules/underscore/cjs/_baseIteratee.js

@@ -0,0 +1,19 @@
+var identity = require('./identity.js');
+var isFunction = require('./isFunction.js');
+var isObject = require('./isObject.js');
+var isArray = require('./isArray.js');
+var matcher = require('./matcher.js');
+var property = require('./property.js');
+var _optimizeCb = require('./_optimizeCb.js');
+
+// An internal function to generate callbacks that can be applied to each
+// element in a collection, returning the desired result — either `_.identity`,
+// an arbitrary callback, a property matcher, or a property accessor.
+function baseIteratee(value, context, argCount) {
+  if (value == null) return identity;
+  if (isFunction(value)) return _optimizeCb(value, context, argCount);
+  if (isObject(value) && !isArray(value)) return matcher(value);
+  return property(value);
+}
+
+module.exports = baseIteratee;

node_modules/underscore/cjs/_cb.js

@@ -0,0 +1,12 @@
+var underscore = require('./underscore.js');
+var _baseIteratee = require('./_baseIteratee.js');
+var iteratee = require('./iteratee.js');
+
+// The function we call internally to generate a callback. It invokes
+// `_.iteratee` if overridden, otherwise `baseIteratee`.
+function cb(value, context, argCount) {
+  if (underscore.iteratee !== iteratee) return underscore.iteratee(value, context);
+  return _baseIteratee(value, context, argCount);
+}
+
+module.exports = cb;

node_modules/underscore/cjs/_chainResult.js

@@ -0,0 +1,8 @@
+var underscore = require('./underscore.js');
+
+// Helper function to continue chaining intermediate results.
+function chainResult(instance, obj) {
+  return instance._chain ? underscore(obj).chain() : obj;
+}
+
+module.exports = chainResult;

node_modules/underscore/cjs/_collectNonEnumProps.js

@@ -0,0 +1,42 @@
+var _setup = require('./_setup.js');
+var isFunction = require('./isFunction.js');
+var _has = require('./_has.js');
+
+// Internal helper to create a simple lookup structure.
+// `collectNonEnumProps` used to depend on `_.contains`, but this led to
+// circular imports. `emulatedSet` is a one-off solution that only works for
+// arrays of strings.
+function emulatedSet(keys) {
+  var hash = {};
+  for (var l = keys.length, i = 0; i < l; ++i) hash[keys[i]] = true;
+  return {
+    contains: function(key) { return hash[key] === true; },
+    push: function(key) {
+      hash[key] = true;
+      return keys.push(key);
+    }
+  };
+}
+
+// Internal helper. Checks `keys` for the presence of keys in IE < 9 that won't
+// be iterated by `for key in ...` and thus missed. Extends `keys` in place if
+// needed.
+function collectNonEnumProps(obj, keys) {
+  keys = emulatedSet(keys);
+  var nonEnumIdx = _setup.nonEnumerableProps.length;
+  var constructor = obj.constructor;
+  var proto = (isFunction(constructor) && constructor.prototype) || _setup.ObjProto;
+
+  // Constructor is a special case.
+  var prop = 'constructor';
+  if (_has(obj, prop) && !keys.contains(prop)) keys.push(prop);
+
+  while (nonEnumIdx--) {
+    prop = _setup.nonEnumerableProps[nonEnumIdx];
+    if (prop in obj && obj[prop] !== proto[prop] && !keys.contains(prop)) {
+      keys.push(prop);
+    }
+  }
+}
+
+module.exports = collectNonEnumProps;

node_modules/underscore/cjs/_createAssigner.js

@@ -0,0 +1,20 @@
+// An internal function for creating assigner functions.
+function createAssigner(keysFunc, defaults) {
+  return function(obj) {
+    var length = arguments.length;
+    if (defaults) obj = Object(obj);
+    if (length < 2 || obj == null) return obj;
+    for (var index = 1; index < length; index++) {
+      var source = arguments[index],
+          keys = keysFunc(source),
+          l = keys.length;
+      for (var i = 0; i < l; i++) {
+        var key = keys[i];
+        if (!defaults || obj[key] === void 0) obj[key] = source[key];
+      }
+    }
+    return obj;
+  };
+}
+
+module.exports = createAssigner;

node_modules/underscore/cjs/_createEscaper.js

@@ -0,0 +1,19 @@
+var keys = require('./keys.js');
+
+// Internal helper to generate functions for escaping and unescaping strings
+// to/from HTML interpolation.
+function createEscaper(map) {
+  var escaper = function(match) {
+    return map[match];
+  };
+  // Regexes for identifying a key that needs to be escaped.
+  var source = '(?:' + keys(map).join('|') + ')';
+  var testRegexp = RegExp(source);
+  var replaceRegexp = RegExp(source, 'g');
+  return function(string) {
+    string = string == null ? '' : '' + string;
+    return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string;
+  };
+}
+
+module.exports = createEscaper;

node_modules/underscore/cjs/_createIndexFinder.js

@@ -0,0 +1,30 @@
+var _getLength = require('./_getLength.js');
+var _setup = require('./_setup.js');
+var _isNaN = require('./isNaN.js');
+
+// Internal function to generate the `_.indexOf` and `_.lastIndexOf` functions.
+function createIndexFinder(dir, predicateFind, sortedIndex) {
+  return function(array, item, idx) {
+    var i = 0, length = _getLength(array);
+    if (typeof idx == 'number') {
+      if (dir > 0) {
+        i = idx >= 0 ? idx : Math.max(idx + length, i);
+      } else {
+        length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1;
+      }
+    } else if (sortedIndex && idx && length) {
+      idx = sortedIndex(array, item);
+      return array[idx] === item ? idx : -1;
+    }
+    if (item !== item) {
+      idx = predicateFind(_setup.slice.call(array, i, length), _isNaN);
+      return idx >= 0 ? idx + i : -1;
+    }
+    for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) {
+      if (array[idx] === item) return idx;
+    }
+    return -1;
+  };
+}
+
+module.exports = createIndexFinder;

node_modules/underscore/cjs/_createPredicateIndexFinder.js

@@ -0,0 +1,17 @@
+var _cb = require('./_cb.js');
+var _getLength = require('./_getLength.js');
+
+// Internal function to generate `_.findIndex` and `_.findLastIndex`.
+function createPredicateIndexFinder(dir) {
+  return function(array, predicate, context) {
+    predicate = _cb(predicate, context);
+    var length = _getLength(array);
+    var index = dir > 0 ? 0 : length - 1;
+    for (; index >= 0 && index < length; index += dir) {
+      if (predicate(array[index], index, array)) return index;
+    }
+    return -1;
+  };
+}
+
+module.exports = createPredicateIndexFinder;

node_modules/underscore/cjs/_createReduce.js

@@ -0,0 +1,30 @@
+var _isArrayLike = require('./_isArrayLike.js');
+var keys = require('./keys.js');
+var _optimizeCb = require('./_optimizeCb.js');
+
+// Internal helper to create a reducing function, iterating left or right.
+function createReduce(dir) {
+  // Wrap code that reassigns argument variables in a separate function than
+  // the one that accesses `arguments.length` to avoid a perf hit. (#1991)
+  var reducer = function(obj, iteratee, memo, initial) {
+    var _keys = !_isArrayLike(obj) && keys(obj),
+        length = (_keys || obj).length,
+        index = dir > 0 ? 0 : length - 1;
+    if (!initial) {
+      memo = obj[_keys ? _keys[index] : index];
+      index += dir;
+    }
+    for (; index >= 0 && index < length; index += dir) {
+      var currentKey = _keys ? _keys[index] : index;
+      memo = iteratee(memo, obj[currentKey], currentKey, obj);
+    }
+    return memo;
+  };
+
+  return function(obj, iteratee, memo, context) {
+    var initial = arguments.length >= 3;
+    return reducer(obj, _optimizeCb(iteratee, context, 4), memo, initial);
+  };
+}
+
+module.exports = createReduce;

node_modules/underscore/cjs/_createSizePropertyCheck.js

@@ -0,0 +1,11 @@
+var _setup = require('./_setup.js');
+
+// Common internal logic for `isArrayLike` and `isBufferLike`.
+function createSizePropertyCheck(getSizeProperty) {
+  return function(collection) {
+    var sizeProperty = getSizeProperty(collection);
+    return typeof sizeProperty == 'number' && sizeProperty >= 0 && sizeProperty <= _setup.MAX_ARRAY_INDEX;
+  }
+}
+
+module.exports = createSizePropertyCheck;

node_modules/underscore/cjs/_deepGet.js

@@ -0,0 +1,11 @@
+// Internal function to obtain a nested property in `obj` along `path`.
+function deepGet(obj, path) {
+  var length = path.length;
+  for (var i = 0; i < length; i++) {
+    if (obj == null) return void 0;
+    obj = obj[path[i]];
+  }
+  return length ? obj : void 0;
+}
+
+module.exports = deepGet;

node_modules/underscore/cjs/_escapeMap.js

@@ -0,0 +1,11 @@
+// Internal list of HTML entities for escaping.
+var escapeMap = {
+  '&': '&',
+  '<': '&lt;',
+  '>': '&gt;',
+  '"': '&quot;',
+  "'": '&#x27;',
+  '`': '&#x60;'
+};
+
+module.exports = escapeMap;

node_modules/underscore/cjs/_executeBound.js

@@ -0,0 +1,15 @@
+var _baseCreate = require('./_baseCreate.js');
+var isObject = require('./isObject.js');
+
+// Internal function to execute `sourceFunc` bound to `context` with optional
+// `args`. Determines whether to execute a function as a constructor or as a
+// normal function.
+function executeBound(sourceFunc, boundFunc, context, callingContext, args) {
+  if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args);
+  var self = _baseCreate(sourceFunc.prototype);
+  var result = sourceFunc.apply(self, args);
+  if (isObject(result)) return result;
+  return self;
+}
+
+module.exports = executeBound;

node_modules/underscore/cjs/_flatten.js

@@ -0,0 +1,33 @@
+var _getLength = require('./_getLength.js');
+var _isArrayLike = require('./_isArrayLike.js');
+var isArray = require('./isArray.js');
+var isArguments = require('./isArguments.js');
+
+// Internal implementation of a recursive `flatten` function.
+function flatten(input, depth, strict, output) {
+  output = output || [];
+  if (!depth && depth !== 0) {
+    depth = Infinity;
+  } else if (depth <= 0) {
+    return output.concat(input);
+  }
+  var idx = output.length;
+  for (var i = 0, length = _getLength(input); i < length; i++) {
+    var value = input[i];
+    if (_isArrayLike(value) && (isArray(value) || isArguments(value))) {
+      // Flatten current level of array or arguments object.
+      if (depth > 1) {
+        flatten(value, depth - 1, strict, output);
+        idx = output.length;
+      } else {
+        var j = 0, len = value.length;
+        while (j < len) output[idx++] = value[j++];
+      }
+    } else if (!strict) {
+      output[idx++] = value;
+    }
+  }
+  return output;
+}
+
+module.exports = flatten;

node_modules/underscore/cjs/_getByteLength.js

@@ -0,0 +1,6 @@
+var _shallowProperty = require('./_shallowProperty.js');
+
+// Internal helper to obtain the `byteLength` property of an object.
+var getByteLength = _shallowProperty('byteLength');
+
+module.exports = getByteLength;

node_modules/underscore/cjs/_getLength.js

@@ -0,0 +1,6 @@
+var _shallowProperty = require('./_shallowProperty.js');
+
+// Internal helper to obtain the `length` property of an object.
+var getLength = _shallowProperty('length');
+
+module.exports = getLength;

node_modules/underscore/cjs/_group.js

@@ -0,0 +1,17 @@
+var _cb = require('./_cb.js');
+var each = require('./each.js');
+
+// An internal function used for aggregate "group by" operations.
+function group(behavior, partition) {
+  return function(obj, iteratee, context) {
+    var result = partition ? [[], []] : {};
+    iteratee = _cb(iteratee, context);
+    each(obj, function(value, index) {
+      var key = iteratee(value, index, obj);
+      behavior(result, value, key);
+    });
+    return result;
+  };
+}
+
+module.exports = group;

node_modules/underscore/cjs/_has.js

@@ -0,0 +1,8 @@
+var _setup = require('./_setup.js');
+
+// Internal function to check whether `key` is an own property name of `obj`.
+function has(obj, key) {
+  return obj != null && _setup.hasOwnProperty.call(obj, key);
+}
+
+module.exports = has;

node_modules/underscore/cjs/_hasObjectTag.js

@@ -0,0 +1,5 @@
+var _tagTester = require('./_tagTester.js');
+
+var hasObjectTag = _tagTester('Object');
+
+module.exports = hasObjectTag;

node_modules/underscore/cjs/_isArrayLike.js

@@ -0,0 +1,10 @@
+var _createSizePropertyCheck = require('./_createSizePropertyCheck.js');
+var _getLength = require('./_getLength.js');
+
+// Internal helper for collection methods to determine whether a collection
+// should be iterated as an array or as an object.
+// Related: https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength
+// Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094
+var isArrayLike = _createSizePropertyCheck(_getLength);
+
+module.exports = isArrayLike;

node_modules/underscore/cjs/_isBufferLike.js

@@ -0,0 +1,8 @@
+var _createSizePropertyCheck = require('./_createSizePropertyCheck.js');
+var _getByteLength = require('./_getByteLength.js');
+
+// Internal helper to determine whether we should spend extensive checks against
+// `ArrayBuffer` et al.
+var isBufferLike = _createSizePropertyCheck(_getByteLength);
+
+module.exports = isBufferLike;

node_modules/underscore/cjs/_keyInObj.js

@@ -0,0 +1,7 @@
+// Internal `_.pick` helper function to determine whether `key` is an enumerable
+// property name of `obj`.
+function keyInObj(value, key, obj) {
+  return key in obj;
+}
+
+module.exports = keyInObj;

node_modules/underscore/cjs/_methodFingerprint.js

@@ -0,0 +1,44 @@
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var _getLength = require('./_getLength.js');
+var isFunction = require('./isFunction.js');
+var allKeys = require('./allKeys.js');
+
+// Since the regular `Object.prototype.toString` type tests don't work for
+// some types in IE 11, we use a fingerprinting heuristic instead, based
+// on the methods. It's not great, but it's the best we got.
+// The fingerprint method lists are defined below.
+function ie11fingerprint(methods) {
+  var length = _getLength(methods);
+  return function(obj) {
+    if (obj == null) return false;
+    // `Map`, `WeakMap` and `Set` have no enumerable keys.
+    var keys = allKeys(obj);
+    if (_getLength(keys)) return false;
+    for (var i = 0; i < length; i++) {
+      if (!isFunction(obj[methods[i]])) return false;
+    }
+    // If we are testing against `WeakMap`, we need to ensure that
+    // `obj` doesn't have a `forEach` method in order to distinguish
+    // it from a regular `Map`.
+    return methods !== weakMapMethods || !isFunction(obj[forEachName]);
+  };
+}
+
+// In the interest of compact minification, we write
+// each string in the fingerprints only once.
+var forEachName = 'forEach',
+    hasName = 'has',
+    commonInit = ['clear', 'delete'],
+    mapTail = ['get', hasName, 'set'];
+
+// `Map`, `WeakMap` and `Set` each have slightly different
+// combinations of the above sublists.
+var mapMethods = commonInit.concat(forEachName, mapTail),
+    weakMapMethods = commonInit.concat(mapTail),
+    setMethods = ['add'].concat(commonInit, forEachName, hasName);
+
+exports.ie11fingerprint = ie11fingerprint;
+exports.mapMethods = mapMethods;
+exports.setMethods = setMethods;
+exports.weakMapMethods = weakMapMethods;

node_modules/underscore/cjs/_optimizeCb.js

@@ -0,0 +1,23 @@
+// Internal function that returns an efficient (for current engines) version
+// of the passed-in callback, to be repeatedly applied in other Underscore
+// functions.
+function optimizeCb(func, context, argCount) {
+  if (context === void 0) return func;
+  switch (argCount == null ? 3 : argCount) {
+    case 1: return function(value) {
+      return func.call(context, value);
+    };
+    // The 2-argument case is omitted because we’re not using it.
+    case 3: return function(value, index, collection) {
+      return func.call(context, value, index, collection);
+    };
+    case 4: return function(accumulator, value, index, collection) {
+      return func.call(context, accumulator, value, index, collection);
+    };
+  }
+  return function() {
+    return func.apply(context, arguments);
+  };
+}
+
+module.exports = optimizeCb;

node_modules/underscore/cjs/_set.js

@@ -0,0 +1,21 @@
+var isNumber = require('./isNumber.js');
+var isArray = require('./isArray.js');
+var isObject = require('./isObject.js');
+
+function set (obj, path, value) {
+  var key = String(path[0]);
+
+  if (path.length === 1) {
+    obj[key] = value;
+    return;
+  }
+
+  if (!isArray(obj[key]) || !isObject(obj[key])) {
+    var nextKey = path[1];
+    obj[key] = isNumber(nextKey) ? [] : {};
+  }
+
+  return set(obj[key], path.slice(1), value);
+}
+
+module.exports = set;

node_modules/underscore/cjs/_setup.js

@@ -0,0 +1,66 @@
+Object.defineProperty(exports, '__esModule', { value: true });
+
+// Current version.
+var VERSION = '1.13.6';
+
+// Establish the root object, `window` (`self`) in the browser, `global`
+// on the server, or `this` in some virtual machines. We use `self`
+// instead of `window` for `WebWorker` support.
+var root = (typeof self == 'object' && self.self === self && self) ||
+          (typeof global == 'object' && global.global === global && global) ||
+          Function('return this')() ||
+          {};
+
+// Save bytes in the minified (but not gzipped) version:
+var ArrayProto = Array.prototype, ObjProto = Object.prototype;
+var SymbolProto = typeof Symbol !== 'undefined' ? Symbol.prototype : null;
+
+// Create quick reference variables for speed access to core prototypes.
+var push = ArrayProto.push,
+    slice = ArrayProto.slice,
+    toString = ObjProto.toString,
+    hasOwnProperty = ObjProto.hasOwnProperty;
+
+// Modern feature detection.
+var supportsArrayBuffer = typeof ArrayBuffer !== 'undefined',
+    supportsDataView = typeof DataView !== 'undefined';
+
+// All **ECMAScript 5+** native function implementations that we hope to use
+// are declared here.
+var nativeIsArray = Array.isArray,
+    nativeKeys = Object.keys,
+    nativeCreate = Object.create,
+    nativeIsView = supportsArrayBuffer && ArrayBuffer.isView;
+
+// Create references to these builtin functions because we override them.
+var _isNaN = isNaN,
+    _isFinite = isFinite;
+
+// Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed.
+var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString');
+var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString',
+  'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString'];
+
+// The largest integer that can be represented exactly.
+var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1;
+
+exports.ArrayProto = ArrayProto;
+exports.MAX_ARRAY_INDEX = MAX_ARRAY_INDEX;
+exports.ObjProto = ObjProto;
+exports.SymbolProto = SymbolProto;
+exports.VERSION = VERSION;
+exports._isFinite = _isFinite;
+exports._isNaN = _isNaN;
+exports.hasEnumBug = hasEnumBug;
+exports.hasOwnProperty = hasOwnProperty;
+exports.nativeCreate = nativeCreate;
+exports.nativeIsArray = nativeIsArray;
+exports.nativeIsView = nativeIsView;
+exports.nativeKeys = nativeKeys;
+exports.nonEnumerableProps = nonEnumerableProps;
+exports.push = push;
+exports.root = root;
+exports.slice = slice;
+exports.supportsArrayBuffer = supportsArrayBuffer;
+exports.supportsDataView = supportsDataView;
+exports.toString = toString;

node_modules/underscore/cjs/_shallowProperty.js

@@ -0,0 +1,8 @@
+// Internal helper to generate a function to obtain property `key` from `obj`.
+function shallowProperty(key) {
+  return function(obj) {
+    return obj == null ? void 0 : obj[key];
+  };
+}
+
+module.exports = shallowProperty;

node_modules/underscore/cjs/_stringTagBug.js

@@ -0,0 +1,15 @@
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var _setup = require('./_setup.js');
+var _hasObjectTag = require('./_hasObjectTag.js');
+
+// In IE 10 - Edge 13, `DataView` has string tag `'[object Object]'`.
+// In IE 11, the most common among them, this problem also applies to
+// `Map`, `WeakMap` and `Set`.
+var hasStringTagBug = (
+      _setup.supportsDataView && _hasObjectTag(new DataView(new ArrayBuffer(8)))
+    ),
+    isIE11 = (typeof Map !== 'undefined' && _hasObjectTag(new Map));
+
+exports.hasStringTagBug = hasStringTagBug;
+exports.isIE11 = isIE11;

node_modules/underscore/cjs/_tagTester.js

@@ -0,0 +1,11 @@
+var _setup = require('./_setup.js');
+
+// Internal function for creating a `toString`-based type tester.
+function tagTester(name) {
+  var tag = '[object ' + name + ']';
+  return function(obj) {
+    return _setup.toString.call(obj) === tag;
+  };
+}
+
+module.exports = tagTester;

node_modules/underscore/cjs/_toBufferView.js

@@ -0,0 +1,13 @@
+var _getByteLength = require('./_getByteLength.js');
+
+// Internal function to wrap or shallow-copy an ArrayBuffer,
+// typed array or DataView to a new view, reusing the buffer.
+function toBufferView(bufferSource) {
+  return new Uint8Array(
+    bufferSource.buffer || bufferSource,
+    bufferSource.byteOffset || 0,
+    _getByteLength(bufferSource)
+  );
+}
+
+module.exports = toBufferView;

node_modules/underscore/cjs/_toPath.js

@@ -0,0 +1,10 @@
+var underscore = require('./underscore.js');
+require('./toPath.js');
+
+// Internal wrapper for `_.toPath` to enable minification.
+// Similar to `cb` for `_.iteratee`.
+function toPath(path) {
+  return underscore.toPath(path);
+}
+
+module.exports = toPath;

node_modules/underscore/cjs/_unescapeMap.js

@@ -0,0 +1,7 @@
+var invert = require('./invert.js');
+var _escapeMap = require('./_escapeMap.js');
+
+// Internal list of HTML entities for unescaping.
+var unescapeMap = invert(_escapeMap);
+
+module.exports = unescapeMap;

node_modules/underscore/cjs/after.js

@@ -0,0 +1,10 @@
+// Returns a function that will only be executed on and after the Nth call.
+function after(times, func) {
+  return function() {
+    if (--times < 1) {
+      return func.apply(this, arguments);
+    }
+  };
+}
+
+module.exports = after;

node_modules/underscore/cjs/allKeys.js

@@ -0,0 +1,15 @@
+var isObject = require('./isObject.js');
+var _setup = require('./_setup.js');
+var _collectNonEnumProps = require('./_collectNonEnumProps.js');
+
+// Retrieve all the enumerable property names of an object.
+function allKeys(obj) {
+  if (!isObject(obj)) return [];
+  var keys = [];
+  for (var key in obj) keys.push(key);
+  // Ahem, IE < 9.
+  if (_setup.hasEnumBug) _collectNonEnumProps(obj, keys);
+  return keys;
+}
+
+module.exports = allKeys;

node_modules/underscore/cjs/before.js

@@ -0,0 +1,14 @@
+// Returns a function that will only be executed up to (but not including) the
+// Nth call.
+function before(times, func) {
+  var memo;
+  return function() {
+    if (--times > 0) {
+      memo = func.apply(this, arguments);
+    }
+    if (times <= 1) func = null;
+    return memo;
+  };
+}
+
+module.exports = before;

node_modules/underscore/cjs/bind.js

@@ -0,0 +1,15 @@
+var restArguments = require('./restArguments.js');
+var isFunction = require('./isFunction.js');
+var _executeBound = require('./_executeBound.js');
+
+// Create a function bound to a given object (assigning `this`, and arguments,
+// optionally).
+var bind = restArguments(function(func, context, args) {
+  if (!isFunction(func)) throw new TypeError('Bind must be called on a function');
+  var bound = restArguments(function(callArgs) {
+    return _executeBound(func, bound, context, this, args.concat(callArgs));
+  });
+  return bound;
+});
+
+module.exports = bind;

node_modules/underscore/cjs/bindAll.js

@@ -0,0 +1,19 @@
+var restArguments = require('./restArguments.js');
+var _flatten = require('./_flatten.js');
+var bind = require('./bind.js');
+
+// Bind a number of an object's methods to that object. Remaining arguments
+// are the method names to be bound. Useful for ensuring that all callbacks
+// defined on an object belong to it.
+var bindAll = restArguments(function(obj, keys) {
+  keys = _flatten(keys, false, false);
+  var index = keys.length;
+  if (index < 1) throw new Error('bindAll must be passed function names');
+  while (index--) {
+    var key = keys[index];
+    obj[key] = bind(obj[key], obj);
+  }
+  return obj;
+});
+
+module.exports = bindAll;

node_modules/underscore/cjs/chain.js

@@ -0,0 +1,10 @@
+var underscore = require('./underscore.js');
+
+// Start chaining a wrapped Underscore object.
+function chain(obj) {
+  var instance = underscore(obj);
+  instance._chain = true;
+  return instance;
+}
+
+module.exports = chain;

node_modules/underscore/cjs/chunk.js

@@ -0,0 +1,15 @@
+var _setup = require('./_setup.js');
+
+// Chunk a single array into multiple arrays, each containing `count` or fewer
+// items.
+function chunk(array, count) {
+  if (count == null || count < 1) return [];
+  var result = [];
+  var i = 0, length = array.length;
+  while (i < length) {
+    result.push(_setup.slice.call(array, i, i += count));
+  }
+  return result;
+}
+
+module.exports = chunk;

node_modules/underscore/cjs/clone.js

@@ -0,0 +1,11 @@
+var isObject = require('./isObject.js');
+var isArray = require('./isArray.js');
+var extend = require('./extend.js');
+
+// Create a (shallow-cloned) duplicate of an object.
+function clone(obj) {
+  if (!isObject(obj)) return obj;
+  return isArray(obj) ? obj.slice() : extend({}, obj);
+}
+
+module.exports = clone;

node_modules/underscore/cjs/compact.js

@@ -0,0 +1,8 @@
+var filter = require('./filter.js');
+
+// Trim out all falsy values from an array.
+function compact(array) {
+  return filter(array, Boolean);
+}
+
+module.exports = compact;

node_modules/underscore/cjs/compose.js

@@ -0,0 +1,14 @@
+// Returns a function that is the composition of a list of functions, each
+// consuming the return value of the function that follows.
+function compose() {
+  var args = arguments;
+  var start = args.length - 1;
+  return function() {
+    var i = start;
+    var result = args[start].apply(this, arguments);
+    while (i--) result = args[i].call(this, result);
+    return result;
+  };
+}
+
+module.exports = compose;

node_modules/underscore/cjs/constant.js

@@ -0,0 +1,8 @@
+// Predicate-generating function. Often useful outside of Underscore.
+function constant(value) {
+  return function() {
+    return value;
+  };
+}
+
+module.exports = constant;

node_modules/underscore/cjs/contains.js

@@ -0,0 +1,12 @@
+var _isArrayLike = require('./_isArrayLike.js');
+var values = require('./values.js');
+var indexOf = require('./indexOf.js');
+
+// Determine if the array or object contains a given item (using `===`).
+function contains(obj, item, fromIndex, guard) {
+  if (!_isArrayLike(obj)) obj = values(obj);
+  if (typeof fromIndex != 'number' || guard) fromIndex = 0;
+  return indexOf(obj, item, fromIndex) >= 0;
+}
+
+module.exports = contains;

node_modules/underscore/cjs/countBy.js

@@ -0,0 +1,11 @@
+var _group = require('./_group.js');
+var _has = require('./_has.js');
+
+// Counts instances of an object that group by a certain criterion. Pass
+// either a string attribute to count by, or a function that returns the
+// criterion.
+var countBy = _group(function(result, value, key) {
+  if (_has(result, key)) result[key]++; else result[key] = 1;
+});
+
+module.exports = countBy;

node_modules/underscore/cjs/create.js

@@ -0,0 +1,13 @@
+var _baseCreate = require('./_baseCreate.js');
+var extendOwn = require('./extendOwn.js');
+
+// Creates an object that inherits from the given prototype object.
+// If additional properties are provided then they will be added to the
+// created object.
+function create(prototype, props) {
+  var result = _baseCreate(prototype);
+  if (props) extendOwn(result, props);
+  return result;
+}
+
+module.exports = create;

node_modules/underscore/cjs/debounce.js

@@ -0,0 +1,42 @@
+var restArguments = require('./restArguments.js');
+var now = require('./now.js');
+
+// When a sequence of calls of the returned function ends, the argument
+// function is triggered. The end of a sequence is defined by the `wait`
+// parameter. If `immediate` is passed, the argument function will be
+// triggered at the beginning of the sequence instead of at the end.
+function debounce(func, wait, immediate) {
+  var timeout, previous, args, result, context;
+
+  var later = function() {
+    var passed = now() - previous;
+    if (wait > passed) {
+      timeout = setTimeout(later, wait - passed);
+    } else {
+      timeout = null;
+      if (!immediate) result = func.apply(context, args);
+      // This check is needed because `func` can recursively invoke `debounced`.
+      if (!timeout) args = context = null;
+    }
+  };
+
+  var debounced = restArguments(function(_args) {
+    context = this;
+    args = _args;
+    previous = now();
+    if (!timeout) {
+      timeout = setTimeout(later, wait);
+      if (immediate) result = func.apply(context, args);
+    }
+    return result;
+  });
+
+  debounced.cancel = function() {
+    clearTimeout(timeout);
+    timeout = args = context = null;
+  };
+
+  return debounced;
+}
+
+module.exports = debounce;

node_modules/underscore/cjs/defaults.js

@@ -0,0 +1,7 @@
+var _createAssigner = require('./_createAssigner.js');
+var allKeys = require('./allKeys.js');
+
+// Fill in a given object with default properties.
+var defaults = _createAssigner(allKeys, true);
+
+module.exports = defaults;

node_modules/underscore/cjs/defer.js

@@ -0,0 +1,9 @@
+var partial = require('./partial.js');
+var delay = require('./delay.js');
+var underscore = require('./underscore.js');
+
+// Defers a function, scheduling it to run after the current call stack has
+// cleared.
+var defer = partial(delay, underscore, 1);
+
+module.exports = defer;

node_modules/underscore/cjs/delay.js

@@ -0,0 +1,11 @@
+var restArguments = require('./restArguments.js');
+
+// Delays a function for the given number of milliseconds, and then calls
+// it with the arguments supplied.
+var delay = restArguments(function(func, wait, args) {
+  return setTimeout(function() {
+    return func.apply(null, args);
+  }, wait);
+});
+
+module.exports = delay;

node_modules/underscore/cjs/difference.js

@@ -0,0 +1,15 @@
+var restArguments = require('./restArguments.js');
+var _flatten = require('./_flatten.js');
+var filter = require('./filter.js');
+var contains = require('./contains.js');
+
+// Take the difference between one array and a number of other arrays.
+// Only the elements present in just the first array will remain.
+var difference = restArguments(function(array, rest) {
+  rest = _flatten(rest, true, true);
+  return filter(array, function(value){
+    return !contains(rest, value);
+  });
+});
+
+module.exports = difference;

node_modules/underscore/cjs/each.js

@@ -0,0 +1,25 @@
+var _optimizeCb = require('./_optimizeCb.js');
+var _isArrayLike = require('./_isArrayLike.js');
+var keys = require('./keys.js');
+
+// The cornerstone for collection functions, an `each`
+// implementation, aka `forEach`.
+// Handles raw objects in addition to array-likes. Treats all
+// sparse array-likes as if they were dense.
+function each(obj, iteratee, context) {
+  iteratee = _optimizeCb(iteratee, context);
+  var i, length;
+  if (_isArrayLike(obj)) {
+    for (i = 0, length = obj.length; i < length; i++) {
+      iteratee(obj[i], i, obj);
+    }
+  } else {
+    var _keys = keys(obj);
+    for (i = 0, length = _keys.length; i < length; i++) {
+      iteratee(obj[_keys[i]], _keys[i], obj);
+    }
+  }
+  return obj;
+}
+
+module.exports = each;

node_modules/underscore/cjs/escape.js

@@ -0,0 +1,7 @@
+var _createEscaper = require('./_createEscaper.js');
+var _escapeMap = require('./_escapeMap.js');
+
+// Function for escaping strings to HTML interpolation.
+var _escape = _createEscaper(_escapeMap);
+
+module.exports = _escape;

node_modules/underscore/cjs/every.js

@@ -0,0 +1,17 @@
+var _cb = require('./_cb.js');
+var _isArrayLike = require('./_isArrayLike.js');
+var keys = require('./keys.js');
+
+// Determine whether all of the elements pass a truth test.
+function every(obj, predicate, context) {
+  predicate = _cb(predicate, context);
+  var _keys = !_isArrayLike(obj) && keys(obj),
+      length = (_keys || obj).length;
+  for (var index = 0; index < length; index++) {
+    var currentKey = _keys ? _keys[index] : index;
+    if (!predicate(obj[currentKey], currentKey, obj)) return false;
+  }
+  return true;
+}
+
+module.exports = every;

node_modules/underscore/cjs/extend.js

@@ -0,0 +1,7 @@
+var _createAssigner = require('./_createAssigner.js');
+var allKeys = require('./allKeys.js');
+
+// Extend a given object with all the properties in passed-in object(s).
+var extend = _createAssigner(allKeys);
+
+module.exports = extend;

node_modules/underscore/cjs/extendOwn.js

@@ -0,0 +1,9 @@
+var _createAssigner = require('./_createAssigner.js');
+var keys = require('./keys.js');
+
+// Assigns a given object with all the own properties in the passed-in
+// object(s).
+// (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign)
+var extendOwn = _createAssigner(keys);
+
+module.exports = extendOwn;

node_modules/underscore/cjs/filter.js

@@ -0,0 +1,14 @@
+var _cb = require('./_cb.js');
+var each = require('./each.js');
+
+// Return all the elements that pass a truth test.
+function filter(obj, predicate, context) {
+  var results = [];
+  predicate = _cb(predicate, context);
+  each(obj, function(value, index, list) {
+    if (predicate(value, index, list)) results.push(value);
+  });
+  return results;
+}
+
+module.exports = filter;

node_modules/underscore/cjs/find.js

@@ -0,0 +1,12 @@
+var _isArrayLike = require('./_isArrayLike.js');
+var findIndex = require('./findIndex.js');
+var findKey = require('./findKey.js');
+
+// Return the first value which passes a truth test.
+function find(obj, predicate, context) {
+  var keyFinder = _isArrayLike(obj) ? findIndex : findKey;
+  var key = keyFinder(obj, predicate, context);
+  if (key !== void 0 && key !== -1) return obj[key];
+}
+
+module.exports = find;

node_modules/underscore/cjs/findIndex.js

@@ -0,0 +1,6 @@
+var _createPredicateIndexFinder = require('./_createPredicateIndexFinder.js');
+
+// Returns the first index on an array-like that passes a truth test.
+var findIndex = _createPredicateIndexFinder(1);
+
+module.exports = findIndex;

node_modules/underscore/cjs/findKey.js

@@ -0,0 +1,14 @@
+var _cb = require('./_cb.js');
+var keys = require('./keys.js');
+
+// Returns the first key on an object that passes a truth test.
+function findKey(obj, predicate, context) {
+  predicate = _cb(predicate, context);
+  var _keys = keys(obj), key;
+  for (var i = 0, length = _keys.length; i < length; i++) {
+    key = _keys[i];
+    if (predicate(obj[key], key, obj)) return key;
+  }
+}
+
+module.exports = findKey;

node_modules/underscore/cjs/findLastIndex.js

@@ -0,0 +1,6 @@
+var _createPredicateIndexFinder = require('./_createPredicateIndexFinder.js');
+
+// Returns the last index on an array-like that passes a truth test.
+var findLastIndex = _createPredicateIndexFinder(-1);
+
+module.exports = findLastIndex;

node_modules/underscore/cjs/findWhere.js

@@ -0,0 +1,10 @@
+var find = require('./find.js');
+var matcher = require('./matcher.js');
+
+// Convenience version of a common use case of `_.find`: getting the first
+// object containing specific `key:value` pairs.
+function findWhere(obj, attrs) {
+  return find(obj, matcher(attrs));
+}
+
+module.exports = findWhere;

node_modules/underscore/cjs/first.js

@@ -0,0 +1,11 @@
+var initial = require('./initial.js');
+
+// Get the first element of an array. Passing **n** will return the first N
+// values in the array. The **guard** check allows it to work with `_.map`.
+function first(array, n, guard) {
+  if (array == null || array.length < 1) return n == null || guard ? void 0 : [];
+  if (n == null || guard) return array[0];
+  return initial(array, array.length - n);
+}
+
+module.exports = first;

node_modules/underscore/cjs/flatten.js

@@ -0,0 +1,9 @@
+var _flatten = require('./_flatten.js');
+
+// Flatten out an array, either recursively (by default), or up to `depth`.
+// Passing `true` or `false` as `depth` means `1` or `Infinity`, respectively.
+function flatten(array, depth) {
+  return _flatten(array, depth, false);
+}
+
+module.exports = flatten;

node_modules/underscore/cjs/functions.js

@@ -0,0 +1,12 @@
+var isFunction = require('./isFunction.js');
+
+// Return a sorted list of the function names available on the object.
+function functions(obj) {
+  var names = [];
+  for (var key in obj) {
+    if (isFunction(obj[key])) names.push(key);
+  }
+  return names.sort();
+}
+
+module.exports = functions;

node_modules/underscore/cjs/get.js

@@ -0,0 +1,14 @@
+var _toPath = require('./_toPath.js');
+var _deepGet = require('./_deepGet.js');
+var isUndefined = require('./isUndefined.js');
+
+// Get the value of the (deep) property on `path` from `object`.
+// If any property in `path` does not exist or if the value is
+// `undefined`, return `defaultValue` instead.
+// The `path` is normalized through `_.toPath`.
+function get(object, path, defaultValue) {
+  var value = _deepGet(object, _toPath(path));
+  return isUndefined(value) ? defaultValue : value;
+}
+
+module.exports = get;

node_modules/underscore/cjs/groupBy.js

@@ -0,0 +1,10 @@
+var _group = require('./_group.js');
+var _has = require('./_has.js');
+
+// Groups the object's values by a criterion. Pass either a string attribute
+// to group by, or a function that returns the criterion.
+var groupBy = _group(function(result, value, key) {
+  if (_has(result, key)) result[key].push(value); else result[key] = [value];
+});
+
+module.exports = groupBy;

node_modules/underscore/cjs/has.js

@@ -0,0 +1,18 @@
+var _has = require('./_has.js');
+var _toPath = require('./_toPath.js');
+
+// Shortcut function for checking if an object has a given property directly on
+// itself (in other words, not on a prototype). Unlike the internal `has`
+// function, this public version can also traverse nested properties.
+function has(obj, path) {
+  path = _toPath(path);
+  var length = path.length;
+  for (var i = 0; i < length; i++) {
+    var key = path[i];
+    if (!_has(obj, key)) return false;
+    obj = obj[key];
+  }
+  return !!length;
+}
+
+module.exports = has;

node_modules/underscore/cjs/identity.js

@@ -0,0 +1,6 @@
+// Keep the identity function around for default iteratees.
+function identity(value) {
+  return value;
+}
+
+module.exports = identity;

node_modules/underscore/cjs/index-default.js

@@ -0,0 +1,11 @@
+var index = require('./index.js');
+var mixin = require('./mixin.js');
+
+// Default Export
+
+// Add all of the Underscore functions to the wrapper object.
+var _ = mixin(index);
+// Legacy Node.js API.
+_._ = _;
+
+module.exports = _;

node_modules/underscore/cjs/index.js

@@ -0,0 +1,278 @@
+Object.defineProperty(exports, '__esModule', { value: true });
+
+var _setup = require('./_setup.js');
+var restArguments = require('./restArguments.js');
+var isObject = require('./isObject.js');
+var isNull = require('./isNull.js');
+var isUndefined = require('./isUndefined.js');
+var isBoolean = require('./isBoolean.js');
+var isElement = require('./isElement.js');
+var isString = require('./isString.js');
+var isNumber = require('./isNumber.js');
+var isDate = require('./isDate.js');
+var isRegExp = require('./isRegExp.js');
+var isError = require('./isError.js');
+var isSymbol = require('./isSymbol.js');
+var isArrayBuffer = require('./isArrayBuffer.js');
+var isDataView = require('./isDataView.js');
+var isArray = require('./isArray.js');
+var isFunction = require('./isFunction.js');
+var isArguments = require('./isArguments.js');
+var _isFinite = require('./isFinite.js');
+var _isNaN = require('./isNaN.js');
+var isTypedArray = require('./isTypedArray.js');
+var isEmpty = require('./isEmpty.js');
+var isMatch = require('./isMatch.js');
+var isEqual = require('./isEqual.js');
+var isMap = require('./isMap.js');
+var isWeakMap = require('./isWeakMap.js');
+var isSet = require('./isSet.js');
+var isWeakSet = require('./isWeakSet.js');
+var keys = require('./keys.js');
+var allKeys = require('./allKeys.js');
+var values = require('./values.js');
+var pairs = require('./pairs.js');
+var invert = require('./invert.js');
+var functions = require('./functions.js');
+var extend = require('./extend.js');
+var extendOwn = require('./extendOwn.js');
+var defaults = require('./defaults.js');
+var create = require('./create.js');
+var clone = require('./clone.js');
+var tap = require('./tap.js');
+var get = require('./get.js');
+var has = require('./has.js');
+var mapObject = require('./mapObject.js');
+var identity = require('./identity.js');
+var constant = require('./constant.js');
+var noop = require('./noop.js');
+var toPath = require('./toPath.js');
+var property = require('./property.js');
+var propertyOf = require('./propertyOf.js');
+var matcher = require('./matcher.js');
+var times = require('./times.js');
+var random = require('./random.js');
+var now = require('./now.js');
+var _escape = require('./escape.js');
+var _unescape = require('./unescape.js');
+var templateSettings = require('./templateSettings.js');
+var template = require('./template.js');
+var result = require('./result.js');
+var uniqueId = require('./uniqueId.js');
+var chain = require('./chain.js');
+var iteratee = require('./iteratee.js');
+var partial = require('./partial.js');
+var bind = require('./bind.js');
+var bindAll = require('./bindAll.js');
+var memoize = require('./memoize.js');
+var delay = require('./delay.js');
+var defer = require('./defer.js');
+var throttle = require('./throttle.js');
+var debounce = require('./debounce.js');
+var wrap = require('./wrap.js');
+var negate = require('./negate.js');
+var compose = require('./compose.js');
+var after = require('./after.js');
+var before = require('./before.js');
+var once = require('./once.js');
+var findKey = require('./findKey.js');
+var findIndex = require('./findIndex.js');
+var findLastIndex = require('./findLastIndex.js');
+var sortedIndex = require('./sortedIndex.js');
+var indexOf = require('./indexOf.js');
+var lastIndexOf = require('./lastIndexOf.js');
+var find = require('./find.js');
+var findWhere = require('./findWhere.js');
+var each = require('./each.js');
+var map = require('./map.js');
+var reduce = require('./reduce.js');
+var reduceRight = require('./reduceRight.js');
+var filter = require('./filter.js');
+var reject = require('./reject.js');
+var every = require('./every.js');
+var some = require('./some.js');
+var contains = require('./contains.js');
+var invoke = require('./invoke.js');
+var pluck = require('./pluck.js');
+var where = require('./where.js');
+var max = require('./max.js');
+var min = require('./min.js');
+var shuffle = require('./shuffle.js');
+var sample = require('./sample.js');
+var sortBy = require('./sortBy.js');
+var groupBy = require('./groupBy.js');
+var indexBy = require('./indexBy.js');
+var countBy = require('./countBy.js');
+var partition = require('./partition.js');
+var toArray = require('./toArray.js');
+var size = require('./size.js');
+var pick = require('./pick.js');
+var omit = require('./omit.js');
+var first = require('./first.js');
+var initial = require('./initial.js');
+var last = require('./last.js');
+var rest = require('./rest.js');
+var compact = require('./compact.js');
+var flatten = require('./flatten.js');
+var without = require('./without.js');
+var uniq = require('./uniq.js');
+var union = require('./union.js');
+var intersection = require('./intersection.js');
+var difference = require('./difference.js');
+var unzip = require('./unzip.js');
+var zip = require('./zip.js');
+var object = require('./object.js');
+var range = require('./range.js');
+var chunk = require('./chunk.js');
+var mixin = require('./mixin.js');
+require('./underscore-array-methods.js');
+var underscore = require('./underscore.js');
+
+// Named Exports
+
+exports.VERSION = _setup.VERSION;
+exports.restArguments = restArguments;
+exports.isObject = isObject;
+exports.isNull = isNull;
+exports.isUndefined = isUndefined;
+exports.isBoolean = isBoolean;
+exports.isElement = isElement;
+exports.isString = isString;
+exports.isNumber = isNumber;
+exports.isDate = isDate;
+exports.isRegExp = isRegExp;
+exports.isError = isError;
+exports.isSymbol = isSymbol;
+exports.isArrayBuffer = isArrayBuffer;
+exports.isDataView = isDataView;
+exports.isArray = isArray;
+exports.isFunction = isFunction;
+exports.isArguments = isArguments;
+exports.isFinite = _isFinite;
+exports.isNaN = _isNaN;
+exports.isTypedArray = isTypedArray;
+exports.isEmpty = isEmpty;
+exports.isMatch = isMatch;
+exports.isEqual = isEqual;
+exports.isMap = isMap;
+exports.isWeakMap = isWeakMap;
+exports.isSet = isSet;
+exports.isWeakSet = isWeakSet;
+exports.keys = keys;
+exports.allKeys = allKeys;
+exports.values = values;
+exports.pairs = pairs;
+exports.invert = invert;
+exports.functions = functions;
+exports.methods = functions;
+exports.extend = extend;
+exports.assign = extendOwn;
+exports.extendOwn = extendOwn;
+exports.defaults = defaults;
+exports.create = create;
+exports.clone = clone;
+exports.tap = tap;
+exports.get = get;
+exports.has = has;
+exports.mapObject = mapObject;
+exports.identity = identity;
+exports.constant = constant;
+exports.noop = noop;
+exports.toPath = toPath;
+exports.property = property;
+exports.propertyOf = propertyOf;
+exports.matcher = matcher;
+exports.matches = matcher;
+exports.times = times;
+exports.random = random;
+exports.now = now;
+exports.escape = _escape;
+exports.unescape = _unescape;
+exports.templateSettings = templateSettings;
+exports.template = template;
+exports.result = result;
+exports.uniqueId = uniqueId;
+exports.chain = chain;
+exports.iteratee = iteratee;
+exports.partial = partial;
+exports.bind = bind;
+exports.bindAll = bindAll;
+exports.memoize = memoize;
+exports.delay = delay;
+exports.defer = defer;
+exports.throttle = throttle;
+exports.debounce = debounce;
+exports.wrap = wrap;
+exports.negate = negate;
+exports.compose = compose;
+exports.after = after;
+exports.before = before;
+exports.once = once;
+exports.findKey = findKey;
+exports.findIndex = findIndex;
+exports.findLastIndex = findLastIndex;
+exports.sortedIndex = sortedIndex;
+exports.indexOf = indexOf;
+exports.lastIndexOf = lastIndexOf;
+exports.detect = find;
+exports.find = find;
+exports.findWhere = findWhere;
+exports.each = each;
+exports.forEach = each;
+exports.collect = map;
+exports.map = map;
+exports.foldl = reduce;
+exports.inject = reduce;
+exports.reduce = reduce;
+exports.foldr = reduceRight;
+exports.reduceRight = reduceRight;
+exports.filter = filter;
+exports.select = filter;
+exports.reject = reject;
+exports.all = every;
+exports.every = every;
+exports.any = some;
+exports.some = some;
+exports.contains = contains;
+exports.include = contains;
+exports.includes = contains;
+exports.invoke = invoke;
+exports.pluck = pluck;
+exports.where = where;
+exports.max = max;
+exports.min = min;
+exports.shuffle = shuffle;
+exports.sample = sample;
+exports.sortBy = sortBy;
+exports.groupBy = groupBy;
+exports.indexBy = indexBy;
+exports.countBy = countBy;
+exports.partition = partition;
+exports.toArray = toArray;
+exports.size = size;
+exports.pick = pick;
+exports.omit = omit;
+exports.first = first;
+exports.head = first;
+exports.take = first;
+exports.initial = initial;
+exports.last = last;
+exports.drop = rest;
+exports.rest = rest;
+exports.tail = rest;
+exports.compact = compact;
+exports.flatten = flatten;
+exports.without = without;
+exports.uniq = uniq;
+exports.unique = uniq;
+exports.union = union;
+exports.intersection = intersection;
+exports.difference = difference;
+exports.transpose = unzip;
+exports.unzip = unzip;
+exports.zip = zip;
+exports.object = object;
+exports.range = range;
+exports.chunk = chunk;
+exports.mixin = mixin;
+exports.default = underscore;

node_modules/underscore/cjs/indexBy.js

@@ -0,0 +1,9 @@
+var _group = require('./_group.js');
+
+// Indexes the object's values by a criterion, similar to `_.groupBy`, but for
+// when you know that your index values will be unique.
+var indexBy = _group(function(result, value, key) {
+  result[key] = value;
+});
+
+module.exports = indexBy;

node_modules/underscore/cjs/indexOf.js

@@ -0,0 +1,11 @@
+var sortedIndex = require('./sortedIndex.js');
+var findIndex = require('./findIndex.js');
+var _createIndexFinder = require('./_createIndexFinder.js');
+
+// Return the position of the first occurrence of an item in an array,
+// or -1 if the item is not included in the array.
+// If the array is large and already in sort order, pass `true`
+// for **isSorted** to use binary search.
+var indexOf = _createIndexFinder(1, findIndex, sortedIndex);
+
+module.exports = indexOf;

node_modules/underscore/cjs/initial.js

@@ -0,0 +1,10 @@
+var _setup = require('./_setup.js');
+
+// Returns everything but the last entry of the array. Especially useful on
+// the arguments object. Passing **n** will return all the values in
+// the array, excluding the last N.
+function initial(array, n, guard) {
+  return _setup.slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n)));
+}
+
+module.exports = initial;

node_modules/underscore/cjs/intersection.js

@@ -0,0 +1,21 @@
+var _getLength = require('./_getLength.js');
+var contains = require('./contains.js');
+
+// Produce an array that contains every item shared between all the
+// passed-in arrays.
+function intersection(array) {
+  var result = [];
+  var argsLength = arguments.length;
+  for (var i = 0, length = _getLength(array); i < length; i++) {
+    var item = array[i];
+    if (contains(result, item)) continue;
+    var j;
+    for (j = 1; j < argsLength; j++) {
+      if (!contains(arguments[j], item)) break;
+    }
+    if (j === argsLength) result.push(item);
+  }
+  return result;
+}
+
+module.exports = intersection;

node_modules/underscore/cjs/invert.js

@@ -0,0 +1,13 @@
+var keys = require('./keys.js');
+
+// Invert the keys and values of an object. The values must be serializable.
+function invert(obj) {
+  var result = {};
+  var _keys = keys(obj);
+  for (var i = 0, length = _keys.length; i < length; i++) {
+    result[obj[_keys[i]]] = _keys[i];
+  }
+  return result;
+}
+
+module.exports = invert;

node_modules/underscore/cjs/invoke.js

@@ -0,0 +1,30 @@
+var restArguments = require('./restArguments.js');
+var isFunction = require('./isFunction.js');
+var map = require('./map.js');
+var _deepGet = require('./_deepGet.js');
+var _toPath = require('./_toPath.js');
+
+// Invoke a method (with arguments) on every item in a collection.
+var invoke = restArguments(function(obj, path, args) {
+  var contextPath, func;
+  if (isFunction(path)) {
+    func = path;
+  } else {
+    path = _toPath(path);
+    contextPath = path.slice(0, -1);
+    path = path[path.length - 1];
+  }
+  return map(obj, function(context) {
+    var method = func;
+    if (!method) {
+      if (contextPath && contextPath.length) {
+        context = _deepGet(context, contextPath);
+      }
+      if (context == null) return void 0;
+      method = context[path];
+    }
+    return method == null ? method : method.apply(context, args);
+  });
+});
+
+module.exports = invoke;

node_modules/underscore/cjs/isArguments.js

@@ -0,0 +1,18 @@
+var _tagTester = require('./_tagTester.js');
+var _has = require('./_has.js');
+
+var isArguments = _tagTester('Arguments');
+
+// Define a fallback version of the method in browsers (ahem, IE < 9), where
+// there isn't any inspectable "Arguments" type.
+(function() {
+  if (!isArguments(arguments)) {
+    isArguments = function(obj) {
+      return _has(obj, 'callee');
+    };
+  }
+}());
+
+var isArguments$1 = isArguments;
+
+module.exports = isArguments$1;

node_modules/underscore/cjs/isArray.js

@@ -0,0 +1,8 @@
+var _setup = require('./_setup.js');
+var _tagTester = require('./_tagTester.js');
+
+// Is a given value an array?
+// Delegates to ECMA5's native `Array.isArray`.
+var isArray = _setup.nativeIsArray || _tagTester('Array');
+
+module.exports = isArray;

node_modules/underscore/cjs/isArrayBuffer.js

@@ -0,0 +1,5 @@
+var _tagTester = require('./_tagTester.js');
+
+var isArrayBuffer = _tagTester('ArrayBuffer');
+
+module.exports = isArrayBuffer;

node_modules/underscore/cjs/isBoolean.js

@@ -0,0 +1,8 @@
+var _setup = require('./_setup.js');
+
+// Is a given value a boolean?
+function isBoolean(obj) {
+  return obj === true || obj === false || _setup.toString.call(obj) === '[object Boolean]';
+}
+
+module.exports = isBoolean;

node_modules/underscore/cjs/isDataView.js

@@ -0,0 +1,16 @@
+var _tagTester = require('./_tagTester.js');
+var isFunction = require('./isFunction.js');
+var isArrayBuffer = require('./isArrayBuffer.js');
+var _stringTagBug = require('./_stringTagBug.js');
+
+var isDataView = _tagTester('DataView');
+
+// In IE 10 - Edge 13, we need a different heuristic
+// to determine whether an object is a `DataView`.
+function ie10IsDataView(obj) {
+  return obj != null && isFunction(obj.getInt8) && isArrayBuffer(obj.buffer);
+}
+
+var isDataView$1 = (_stringTagBug.hasStringTagBug ? ie10IsDataView : isDataView);
+
+module.exports = isDataView$1;

node_modules/underscore/cjs/isDate.js

@@ -0,0 +1,5 @@
+var _tagTester = require('./_tagTester.js');
+
+var isDate = _tagTester('Date');
+
+module.exports = isDate;

node_modules/underscore/cjs/isElement.js

@@ -0,0 +1,6 @@
+// Is a given value a DOM element?
+function isElement(obj) {
+  return !!(obj && obj.nodeType === 1);
+}
+
+module.exports = isElement;

node_modules/underscore/cjs/isEmpty.js

@@ -0,0 +1,20 @@
+var _getLength = require('./_getLength.js');
+var isArray = require('./isArray.js');
+var isString = require('./isString.js');
+var isArguments = require('./isArguments.js');
+var keys = require('./keys.js');
+
+// Is a given array, string, or object empty?
+// An "empty" object has no enumerable own-properties.
+function isEmpty(obj) {
+  if (obj == null) return true;
+  // Skip the more expensive `toString`-based type checks if `obj` has no
+  // `.length`.
+  var length = _getLength(obj);
+  if (typeof length == 'number' && (
+    isArray(obj) || isString(obj) || isArguments(obj)
+  )) return length === 0;
+  return _getLength(keys(obj)) === 0;
+}
+
+module.exports = isEmpty;

node_modules/underscore/cjs/isEqual.js

@@ -0,0 +1,140 @@
+var underscore = require('./underscore.js');
+var _setup = require('./_setup.js');
+var _getByteLength = require('./_getByteLength.js');
+var isTypedArray = require('./isTypedArray.js');
+var isFunction = require('./isFunction.js');
+var _stringTagBug = require('./_stringTagBug.js');
+var isDataView = require('./isDataView.js');
+var keys = require('./keys.js');
+var _has = require('./_has.js');
+var _toBufferView = require('./_toBufferView.js');
+
+// We use this string twice, so give it a name for minification.
+var tagDataView = '[object DataView]';
+
+// Internal recursive comparison function for `_.isEqual`.
+function eq(a, b, aStack, bStack) {
+  // Identical objects are equal. `0 === -0`, but they aren't identical.
+  // See the [Harmony `egal` proposal](https://wiki.ecmascript.org/doku.php?id=harmony:egal).
+  if (a === b) return a !== 0 || 1 / a === 1 / b;
+  // `null` or `undefined` only equal to itself (strict comparison).
+  if (a == null || b == null) return false;
+  // `NaN`s are equivalent, but non-reflexive.
+  if (a !== a) return b !== b;
+  // Exhaust primitive checks
+  var type = typeof a;
+  if (type !== 'function' && type !== 'object' && typeof b != 'object') return false;
+  return deepEq(a, b, aStack, bStack);
+}
+
+// Internal recursive comparison function for `_.isEqual`.
+function deepEq(a, b, aStack, bStack) {
+  // Unwrap any wrapped objects.
+  if (a instanceof underscore) a = a._wrapped;
+  if (b instanceof underscore) b = b._wrapped;
+  // Compare `[[Class]]` names.
+  var className = _setup.toString.call(a);
+  if (className !== _setup.toString.call(b)) return false;
+  // Work around a bug in IE 10 - Edge 13.
+  if (_stringTagBug.hasStringTagBug && className == '[object Object]' && isDataView(a)) {
+    if (!isDataView(b)) return false;
+    className = tagDataView;
+  }
+  switch (className) {
+    // These types are compared by value.
+    case '[object RegExp]':
+      // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i')
+    case '[object String]':
+      // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is
+      // equivalent to `new String("5")`.
+      return '' + a === '' + b;
+    case '[object Number]':
+      // `NaN`s are equivalent, but non-reflexive.
+      // Object(NaN) is equivalent to NaN.
+      if (+a !== +a) return +b !== +b;
+      // An `egal` comparison is performed for other numeric values.
+      return +a === 0 ? 1 / +a === 1 / b : +a === +b;
+    case '[object Date]':
+    case '[object Boolean]':
+      // Coerce dates and booleans to numeric primitive values. Dates are compared by their
+      // millisecond representations. Note that invalid dates with millisecond representations
+      // of `NaN` are not equivalent.
+      return +a === +b;
+    case '[object Symbol]':
+      return _setup.SymbolProto.valueOf.call(a) === _setup.SymbolProto.valueOf.call(b);
+    case '[object ArrayBuffer]':
+    case tagDataView:
+      // Coerce to typed array so we can fall through.
+      return deepEq(_toBufferView(a), _toBufferView(b), aStack, bStack);
+  }
+
+  var areArrays = className === '[object Array]';
+  if (!areArrays && isTypedArray(a)) {
+      var byteLength = _getByteLength(a);
+      if (byteLength !== _getByteLength(b)) return false;
+      if (a.buffer === b.buffer && a.byteOffset === b.byteOffset) return true;
+      areArrays = true;
+  }
+  if (!areArrays) {
+    if (typeof a != 'object' || typeof b != 'object') return false;
+
+    // Objects with different constructors are not equivalent, but `Object`s or `Array`s
+    // from different frames are.
+    var aCtor = a.constructor, bCtor = b.constructor;
+    if (aCtor !== bCtor && !(isFunction(aCtor) && aCtor instanceof aCtor &&
+                             isFunction(bCtor) && bCtor instanceof bCtor)
+                        && ('constructor' in a && 'constructor' in b)) {
+      return false;
+    }
+  }
+  // Assume equality for cyclic structures. The algorithm for detecting cyclic
+  // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`.
+
+  // Initializing stack of traversed objects.
+  // It's done here since we only need them for objects and arrays comparison.
+  aStack = aStack || [];
+  bStack = bStack || [];
+  var length = aStack.length;
+  while (length--) {
+    // Linear search. Performance is inversely proportional to the number of
+    // unique nested structures.
+    if (aStack[length] === a) return bStack[length] === b;
+  }
+
+  // Add the first object to the stack of traversed objects.
+  aStack.push(a);
+  bStack.push(b);
+
+  // Recursively compare objects and arrays.
+  if (areArrays) {
+    // Compare array lengths to determine if a deep comparison is necessary.
+    length = a.length;
+    if (length !== b.length) return false;
+    // Deep compare the contents, ignoring non-numeric properties.
+    while (length--) {
+      if (!eq(a[length], b[length], aStack, bStack)) return false;
+    }
+  } else {
+    // Deep compare objects.
+    var _keys = keys(a), key;
+    length = _keys.length;
+    // Ensure that both objects contain the same number of properties before comparing deep equality.
+    if (keys(b).length !== length) return false;
+    while (length--) {
+      // Deep compare each member
+      key = _keys[length];
+      if (!(_has(b, key) && eq(a[key], b[key], aStack, bStack))) return false;
+    }
+  }
+  // Remove the first object from the stack of traversed objects.
+  aStack.pop();
+  bStack.pop();
+  return true;
+}
+
+// Perform a deep comparison to check if two objects are equal.
+function isEqual(a, b) {
+  return eq(a, b);
+}
+
+module.exports = isEqual;

node_modules/underscore/cjs/isError.js

@@ -0,0 +1,5 @@
+var _tagTester = require('./_tagTester.js');
+
+var isError = _tagTester('Error');
+
+module.exports = isError;

node_modules/underscore/cjs/isFinite.js

@@ -0,0 +1,9 @@
+var _setup = require('./_setup.js');
+var isSymbol = require('./isSymbol.js');
+
+// Is a given object a finite number?
+function isFinite(obj) {
+  return !isSymbol(obj) && _setup._isFinite(obj) && !isNaN(parseFloat(obj));
+}
+
+module.exports = isFinite;

node_modules/underscore/cjs/isFunction.js

@@ -0,0 +1,17 @@
+var _tagTester = require('./_tagTester.js');
+var _setup = require('./_setup.js');
+
+var isFunction = _tagTester('Function');
+
+// Optimize `isFunction` if appropriate. Work around some `typeof` bugs in old
+// v8, IE 11 (#1621), Safari 8 (#1929), and PhantomJS (#2236).
+var nodelist = _setup.root.document && _setup.root.document.childNodes;
+if (typeof /./ != 'function' && typeof Int8Array != 'object' && typeof nodelist != 'function') {
+  isFunction = function(obj) {
+    return typeof obj == 'function' || false;
+  };
+}
+
+var isFunction$1 = isFunction;
+
+module.exports = isFunction$1;

node_modules/underscore/cjs/isMap.js

@@ -0,0 +1,7 @@
+var _tagTester = require('./_tagTester.js');
+var _stringTagBug = require('./_stringTagBug.js');
+var _methodFingerprint = require('./_methodFingerprint.js');
+
+var isMap = _stringTagBug.isIE11 ? _methodFingerprint.ie11fingerprint(_methodFingerprint.mapMethods) : _tagTester('Map');
+
+module.exports = isMap;

node_modules/underscore/cjs/isMatch.js

@@ -0,0 +1,15 @@
+var keys = require('./keys.js');
+
+// Returns whether an object has a given set of `key:value` pairs.
+function isMatch(object, attrs) {
+  var _keys = keys(attrs), length = _keys.length;
+  if (object == null) return !length;
+  var obj = Object(object);
+  for (var i = 0; i < length; i++) {
+    var key = _keys[i];
+    if (attrs[key] !== obj[key] || !(key in obj)) return false;
+  }
+  return true;
+}
+
+module.exports = isMatch;

node_modules/underscore/cjs/isNaN.js

@@ -0,0 +1,9 @@
+var _setup = require('./_setup.js');
+var isNumber = require('./isNumber.js');
+
+// Is the given value `NaN`?
+function isNaN(obj) {
+  return isNumber(obj) && _setup._isNaN(obj);
+}
+
+module.exports = isNaN;

node_modules/underscore/cjs/isNull.js

@@ -0,0 +1,6 @@
+// Is a given value equal to null?
+function isNull(obj) {
+  return obj === null;
+}
+
+module.exports = isNull;

node_modules/underscore/cjs/isNumber.js

@@ -0,0 +1,5 @@
+var _tagTester = require('./_tagTester.js');
+
+var isNumber = _tagTester('Number');
+
+module.exports = isNumber;

node_modules/underscore/cjs/isObject.js

@@ -0,0 +1,7 @@
+// Is a given variable an object?
+function isObject(obj) {
+  var type = typeof obj;
+  return type === 'function' || (type === 'object' && !!obj);
+}
+
+module.exports = isObject;

node_modules/underscore/cjs/isRegExp.js

@@ -0,0 +1,5 @@
+var _tagTester = require('./_tagTester.js');
+
+var isRegExp = _tagTester('RegExp');
+
+module.exports = isRegExp;

node_modules/underscore/cjs/isSet.js

@@ -0,0 +1,7 @@
+var _tagTester = require('./_tagTester.js');
+var _stringTagBug = require('./_stringTagBug.js');
+var _methodFingerprint = require('./_methodFingerprint.js');
+
+var isSet = _stringTagBug.isIE11 ? _methodFingerprint.ie11fingerprint(_methodFingerprint.setMethods) : _tagTester('Set');
+
+module.exports = isSet;

node_modules/underscore/cjs/isString.js

@@ -0,0 +1,5 @@
+var _tagTester = require('./_tagTester.js');
+
+var isString = _tagTester('String');
+
+module.exports = isString;

node_modules/underscore/cjs/isSymbol.js

@@ -0,0 +1,5 @@
+var _tagTester = require('./_tagTester.js');
+
+var isSymbol = _tagTester('Symbol');
+
+module.exports = isSymbol;