Add node modules and new code for release (#168)

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

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;