Add node modules and new code for release (#57)

Co-authored-by: taakleton <taakleton@users.noreply.github.com>

node_modules/lodash/invert.js

@@ -0,0 +1,42 @@
+var constant = require('./constant'),
+    createInverter = require('./_createInverter'),
+    identity = require('./identity');
+
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/**
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var nativeObjectToString = objectProto.toString;
+
+/**
+ * Creates an object composed of the inverted keys and values of `object`.
+ * If `object` contains duplicate values, subsequent values overwrite
+ * property assignments of previous values.
+ *
+ * @static
+ * @memberOf _
+ * @since 0.7.0
+ * @category Object
+ * @param {Object} object The object to invert.
+ * @returns {Object} Returns the new inverted object.
+ * @example
+ *
+ * var object = { 'a': 1, 'b': 2, 'c': 1 };
+ *
+ * _.invert(object);
+ * // => { '1': 'c', '2': 'b' }
+ */
+var invert = createInverter(function(result, value, key) {
+  if (value != null &&
+      typeof value.toString != 'function') {
+    value = nativeObjectToString.call(value);
+  }
+
+  result[value] = key;
+}, constant(identity));
+
+module.exports = invert;