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

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

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;