* Remove await on GetFileDiff
Progress towards #28
* n roots instead of 2n
* Lint
* Trying something with portals
* Portal component, one root
* Fix element clean up, prep for later tasks
* Draft: toolbar element injection
* Working click to select rich or source
* Actually working now
* Fixes
* Clean up
* Polishing here and there
* Add SourceRichToggle component
* e2e test with toolbar
* Update linux snapshots
* Remove failing test (WIP)
* Clean up