Replace lodash with lodash.<fn> deps

package.json

@@ -35,7 +35,10 @@
     "webpack": "^1.12.2"
   },
   "dependencies": {
-    "lodash": "^4.2.0"
+    "lodash.defaults": "^4.2.0",
+    "lodash.memoize": "^4.1.2",
+    "lodash.union": "^4.6.0",
+    "lodash.without": "^4.4.0"
   },
   "peerDependencies": {
     "react-dnd": "^2.0.0"

src/BrowserDetector.js

@@ -1,4 +1,4 @@
-import memoize from 'lodash/memoize';
+import memoize from 'lodash.memoize';
 
 export const isFirefox = memoize(() =>
   /firefox/i.test(navigator.userAgent)

src/EnterLeaveCounter.js

@@ -1,5 +1,5 @@
-import union from 'lodash/union';
-import without from 'lodash/without';
+import union from 'lodash.union';
+import without from 'lodash.without';
 
 export default class EnterLeaveCounter {
   constructor() {

src/HTML5Backend.js

@@ -1,4 +1,4 @@
-import defaults from 'lodash/defaults';
+import defaults from 'lodash.defaults';
 import shallowEqual from './shallowEqual';
 import EnterLeaveCounter from './EnterLeaveCounter';
 import { isFirefox } from './BrowserDetector';