* 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.
* update deps
* update node version in CI file
* update node version in .babelrc
* update node version to 10
* update electron
* update karma-electron
* update element-ui etc
* update vega-embed etc
* update webpack-dev-server
* fix: commonmark example 475 failed
* fix some strong and em commonmark examples failed test
* remove some debug code
* fix: cm example 353
* fix: cm example 387
* remove ununsed codes
* use \s to replace unicode whitespace array
* fix 3 atx heading examples
* fix setext heading failed examples and image alt examples
* fix: example 520 and 521