background.js cleanup and comments.
Fill in some missing file handler registrations.
Added Scala support
Manifest bump.
Correctly trigger hover class removal.
Update files on window focus. Fixes #149
Added a 'trim whitespace' command and trigger it on save if enabled. Fixes #151
Manifest bump
Actually make 'trim whitespace' work without blowing up the cursor position.
Added a types command for generating the manifest. Fixes #147
Add project ignoreFiles option. Fixes #153
Fix a bug where the palette 'showed' too many results
Update modification time as part of session:revert-file.
Manifest bump.