first, thanks (even though i do not need it). I really like the Design of the Editor (sadly you used - as far as i can see - WPF, which is pretty the opposite of cross-platform).
The editor seems to be bug free, which is extremly important and is really amazing for this early development stage. Nevertheless I really miss a lot of features i would expect in an editor.
For me (at least) the most important features are:
- automatic code completion. I know you have that, but - at least, as far as i can see, there is no code completion for user defined objects (vars, function names e.g.). This includes the automatic resolving of includes.  now i see: user defined symbols are resolved, but this process seems to be super slow.., never the less i do not see any resolving of includes).
- debugging and running of code. I'm not sure if you can run lite-C code atm, but this would be really a missing feature. Debugging code is useful too.
two more notes:
- Please go out of my context menu, or at least make this switchable in the installer
- If you switch the design to Visual Studio 2010, there seems to be some issues with input boxes (e.g. Web-Browser --> Change URL).
All in all a very good start (especially as it's bug free), though i would really work on the user code completion and maybe on the automatic include resolving (some kind of project explorer?).
PS: i know that's totally ignorant and dumb, but your cool project just gave me the motivation to restart my editor
(probably i just can not stand, that you're able to work out a stable editor, and my dumbass editor crashs all the time..ah i never get older...