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

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

node_modules/underscore/cjs/_baseIteratee.js

@@ -0,0 +1,19 @@
+var identity = require('./identity.js');
+var isFunction = require('./isFunction.js');
+var isObject = require('./isObject.js');
+var isArray = require('./isArray.js');
+var matcher = require('./matcher.js');
+var property = require('./property.js');
+var _optimizeCb = require('./_optimizeCb.js');
+
+// An internal function to generate callbacks that can be applied to each
+// element in a collection, returning the desired result — either `_.identity`,
+// an arbitrary callback, a property matcher, or a property accessor.
+function baseIteratee(value, context, argCount) {
+  if (value == null) return identity;
+  if (isFunction(value)) return _optimizeCb(value, context, argCount);
+  if (isObject(value) && !isArray(value)) return matcher(value);
+  return property(value);
+}
+
+module.exports = baseIteratee;