Some more code comments.

Signed-off-by: Jean-Denis Vauguet <jd@vauguet.fr>
New features: Modified Lines Only and more.

Other small improvements included:
- better code comments (!)
- better status messages
- save after trim
- trim on save
- auto-disabling of the highlighting if the plugin is disabled

Squashed several commits, too hard to maintain chained consistency
between features branch at this point!

All manual tests green on ST2 and ST3.

Signed-off-by: Jean-Denis Vauguet <jd@vauguet.fr>
Dropdown menu with current actions.

Quick access to:
- Delete
- Modified Lines Only?
- Highlight?

Signed-off-by: Jean-Denis Vauguet <jd@vauguet.fr>
README overhaul!

Describes all the recent features and settings.

Signed-off-by: Jean-Denis Vauguet <jd@vauguet.fr>
Documenting the toggling command for MLO.

Signed-off-by: Jean-Denis Vauguet <jd@vauguet.fr>
Message for v1.0.0.

Signed-off-by: Jean-Denis Vauguet <jd@vauguet.fr>
v1.0.0 notified to Package Control.

Signed-off-by: Jean-Denis Vauguet <jd@vauguet.fr>