refactor(store): use a custom implementation of redux

custom implementation can be easily optimized for performance and smaller library footprint

package.json

@@ -72,7 +72,6 @@
     "validate-commit-msg": "^2.8.0"
   },
   "dependencies": {
-    "redux": "^3.5.2",
     "window-or-global": "^1.0.1"
   }
 }

src/createWCProto.js

@@ -6,7 +6,7 @@
  */
 'use strict'
 
-import {createStore} from 'redux'
+import {createStore} from './micro-redux'
 import CustomEvent from './CustomEvent'
 
 function isArray (i) {

src/micro-redux.js

@@ -0,0 +1,36 @@
+/**
+ * Created by tushar.mathur on 05/09/16.
+ */
+
+'use strict'
+
+const INIT = {type: '@@redux/INIT'}
+
+export class Store {
+  constructor (reducer, state) {
+    this.__reducer = reducer
+    this.__state = state
+    this.__listners = []
+    this.__dispatching = false
+    this.dispatch(INIT)
+  }
+
+  subscribe (listener) {
+    const i = this.__listners.push(listener)
+    return () => this.__listners.splice(i - 1, 1)
+  }
+
+  getState () {
+    return this.__state
+  }
+
+  dispatch (action) {
+    if (this.__dispatching) return
+    this.__dispatching = true
+    this.__state = this.__reducer(this.__state, action)
+    this.__listners.forEach(i => i(this.__state))
+    this.__dispatching = false
+  }
+}
+
+export const createStore = (reducer, state) => new Store(reducer, state)