* Removed the space in 'Mark Text' (#2763)
Literally just replaced all occurances of 'Mark Text' with 'MarkText' using sed.
This is directly related to #2763.
* Revert changes to .github directory
Reverted changelog etc.
* Added `cs` alias for `csharp` in code blocks (Fixes#2760)
* Added error handler in the renderer process (should fix#2758)
The `src/muya/lib/contentState/clickCtrl.js` file will now return if
`document.querySelector` fails to find an element.
