That's really neat. I'd like to futz around with it if possible.
http://depositfiles.com/files/baocpfycl
It is super rough and not particularly made for normal users (my new editor will ultimately be pretty user friendly and have all the features one would expect). I made this in a short time span, during that competition for that game. But if you are curious here you go I guess.
There is no undo/scaling/other stuff so keep in that mind.
Controls
WASD - Move around map
NUMPAD 1,2,3 (and only Numpad) - change tile layer (front, middle, back)
F12 - Fullscreen toggle
Press number key to change mode
1 - Vertice
Double click - set vertice
Left click - select / deselect
Hold Right click - move vertice
Delete - delete all selected vertice
Selection rectangle (hold left click) - select / deselect I believe
2 - Line (does nothing)
3 - Sector
Left click - left click on a series of vertices to make a "sector". It will seal off and become a sector once you link to the first vertice again.
The sector shows up as a red block which you can select / deselect and delete.
4 - Thing
Double click - place
left click - select / deselct (properties appear in windows form for a selected thing)
hold right click - move thing
delete - etc
mousewheel - up/down through all the entities
5 - Tileset
left/right click - place / unplace
left/right selection (hold click) - batch place / unplace
mousewheel - up/down through the tileset
---------
I decided to work on making my own editor (I used to use OgmoEditor - which is pretty nice) because when I am working on something and I need a feature right then and there it is generally easy to implement, specifically for my games. Also it is a nice learning experience. I am pretty sure I will keep reusing the editor I am working on as a base for pretty much any 2D game in the future.