Done some testing now... You are on a good way.
Some things which I miss are:
- Code completion
- Small help window popping up when mouse hovers over a scripting command for some time
(I'm using notepad++ 5.7 with Armascript from i0n0s and it has both features).
Also there seems to be a bug with project loading. Some missions in my mission folder are marked as projects which I can load, some not. No idea what rules you use to determine if it actually is a project or not.
Other than that it looks already really good. Like already written I hope you can also add git support in the future
Edit: What I really like is that I can open more than one project at once.