Bump to v4.10.0.

_castPath.js

@@ -0,0 +1,15 @@
+var isArray = require('./isArray'),
+    stringToPath = require('./_stringToPath');
+
+/**
+ * Casts `value` to a path array if it's not one.
+ *
+ * @private
+ * @param {*} value The value to inspect.
+ * @returns {Array} Returns the cast property path array.
+ */
+function castPath(value) {
+  return isArray(value) ? value : stringToPath(value);
+}
+
+module.exports = castPath;