Bumped zefyr version to 0.2.0 due to breaking changes

packages/zefyr/CHANGELOG.md

-## 0.1.3
+## 0.2.0
 
 * Breaking change: `ZefyrImageDelegate.createImageProvider` replaced with
   `ZefyrImageDelegate.buildImage`.
 * Fixed redundant updates on composing range for Android.
 * Added TextCapitalization.sentences
+* Added docs for embedding images.
 
 ## 0.1.2
 

packages/zefyr/pubspec.yaml

 name: zefyr
 description: Clean, minimalistic and collaboration-ready rich text editor for Flutter.
-version: 0.1.3
+version: 0.2.0
 author: Anatoly Pulyaevskiy <anatoly.pulyaevskiy@gmail.com>
 homepage: https://github.com/memspace/zefyr