update whatsnew, only show if not at previous version

src/features/whatsnew/whatsNew.js

@@ -32,6 +32,10 @@ Thanks for using **Solidity Visual Developer** 🤜🤛
 
 The complete changelog can be found [here](https://github.com/ConsenSys/vscode-solidity-auditor/blob/master/CHANGELOG.md). 
 
+#### v0.0.29
+- sort top level contracts list by filename
+- fix: VSCode-Error: Proposed API is only available when running out of dev or with the following command line switch... #59
+
 #### v0.0.28
 - new: integration with [tintinweb.vscode-ethover](https://marketplace.visualstudio.com/items?itemName=tintinweb.vscode-ethover) (uninstall to disable)
     - ethereum address hover