Merge pull request #36 from Download/release/0.7.0

### 0.7.0: Quality improvements
* Tightened API surface area
  + [x][Removed support for type string from `is`](#35)
* Improved documentation
  + [x][JSDoc comments](#26)
  + [x][Added logo and comic](#29)
* Improved dependency management
  + [x][Enabled Greenkeeper](#32)
  + [x][Enabled Greenkeeper-lockfile](a3e7f4a)

README.md

@@ -1,4 +1,4 @@
-# mics <sup><sub>0.6.3</sub></sup>
+# mics <sup><sub>0.7.0</sub></sup>
 ### Multiple Inheritance Class System
 
 [![Greenkeeper badge](https://badges.greenkeeper.io/Download/mics.svg)](https://greenkeeper.io/)
@@ -30,8 +30,8 @@ npm install --save mics
 ```
 
 ## Direct download
-* [mics.umd.js](https://cdn.rawgit.com/download/mics/0.6.3/dist/mics.umd.js) (universal module works in browser and node)
-* [mics.min.js](https://cdn.rawgit.com/download/mics/0.6.3/dist/mics.min.js) (minified version of universal module file)
+* [mics.umd.js](https://cdn.rawgit.com/download/mics/0.7.0/dist/mics.umd.js) (universal module works in browser and node)
+* [mics.min.js](https://cdn.rawgit.com/download/mics/0.7.0/dist/mics.min.js) (minified version of universal module file)
 
 
 ## Include in your app
@@ -59,7 +59,7 @@ define(['mics'], function(mics){
 
 ### Script tag
 ```html
-<script src="https://cdn.rawgit.com/download/mics/0.6.3/dist/mics.min.js"></script>
+<script src="https://cdn.rawgit.com/download/mics/0.7.0/dist/mics.min.js"></script>
 <script>
   var mix = mics.mix
   var is = mics.is