Changes Open All Changes (w difftool) to open files, rather than dirdiff
Changes Open All Changes (w difftool) to prompt for repo when needed

Adds a static "container"
Adds a document tracker - replaces the context tracker
Adds a line tracker
Refactors all the things - better performance, lower overhead, less code, more separation of concerns, more maintainable (hopefully)
Changes dirty blame to only happen after a "idle" delay
Closes open file annotations on edit (too expensive to track changes)

Fixes #220 - Open revision results in empty file
Fixes SO many bugs

Adds Arrays.filterMap
Reworks repo status message computation