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

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

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;