Bump to v4.17.5.

fp/_util.js

@@ -5,7 +5,9 @@ module.exports = {
   'curry': require('../curry'),
   'forEach': require('../_arrayEach'),
   'isArray': require('../isArray'),
+  'isError': require('../isError'),
   'isFunction': require('../isFunction'),
+  'isWeakMap': require('../isWeakMap'),
   'iteratee': require('../iteratee'),
   'keys': require('../_baseKeys'),
   'rearg': require('../rearg'),