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

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

node_modules/underscore/cjs/where.js

@@ -0,0 +1,10 @@
+var filter = require('./filter.js');
+var matcher = require('./matcher.js');
+
+// Convenience version of a common use case of `_.filter`: selecting only
+// objects containing specific `key:value` pairs.
+function where(obj, attrs) {
+  return filter(obj, matcher(attrs));
+}
+
+module.exports = where;