add SetDisplayedFile to code editor
add refresh command
add dte to service class
use GitBash.RunCmd to diff file
show file diff
embed diff classifier project
refresh after solution is closed
add GitException class
set tool window title
refresh upon open and close solution
add unit tests
add commit function
service class to own the repository
update vsix metadata
add history viewer
prompt for file changes when manually refresh
use relative file path for undo / checkout file changes