Use private createHelper from recompose as its not exposed (google-map-react#537)

Author: itsmichaeldiego

develop/utils/props2Stream.js

@@ -1,5 +1,5 @@
 import { Component } from 'react';
-import { createHelper } from 'recompose';
+import createHelper from 'recompose/createHelper';
 import { BehaviorSubject } from 'rxjs/BehaviorSubject';
 import 'rxjs/add/operator/distinctUntilChanged';
 import createEagerFactory from './createEagerFactory';

develop/utils/stream2Props.js

@@ -1,5 +1,5 @@
 import { Component } from 'react';
-import { createHelper } from 'recompose';
+import createHelper from 'recompose/createHelper';
 import createEagerFactory from './createEagerFactory';
 
 // if stream prop will change this will fail,

develop/utils/withStateSelector.js

@@ -1,5 +1,5 @@
 import { Component } from 'react';
-import { createHelper } from 'recompose';
+import createHelper from 'recompose/createHelper';
 import createEagerFactory from './createEagerFactory';
 
 const withStateSelector = (stateName, stateUpdaterName, selectorFactory) =>