Upgrade to CodeMirror 6

[burdiuz]

There's new version of CodeMirror, it is complete rework and it includes support for mobile devices. So it will better suit for react-native development. I'm currently working on editor package, then it needs to be integrated into this project. The plan is to store all files as assets and load them via async requires https://github.com/burdiuz/babel-ioc-dep-wrap-plugin. Currently all files are bundled and this heavily affects load times of the application with all the stuff that is not being used.

[suXXVI]

any updates on this? would love to try it out