* WIP - initial implementation
* Add stagedQuickDiffProvider API
* Reduce the usage of `isSCM`
* Make unstage feel snappier
* Deduplicate diffs between primary and secondary
* Fix unstage selected ranges to work from the editor
* WIP - saving my work
* Fixed deduplication and commands
* Add pattern colors
* Rework the colors, and fix deleted glyph
* Got unstage commands working
* Update provider name
* Some improvements
* Cleaned up CSS
* Tweak decoration colors
* Update proposed API naming
* Contributed decorations will use the primary colors for the time being
* More cleanup
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