Overgrowth alpha 28

Here is what is new in Overgrowth in this weekly alpha. If you are confused what a weekly alpha is, or even what Overgrowth is, please read our fancy FAQ. Basically, we are developing a massive video game from the ground up -- we are able to do this completely independently by accepting preorders for the game before it's done!

Here are a few highlights from the source repository: - Lots of decal fixes and improvements - Displays key presses to debug foreign keyboards - Cleaning up and formalizing creation and removal of entities, grouping, and undo/redo - Combining various editor modes into an omni editor - Some decal editor and billboard improvements - Text editor UI - Item browser UI - Initial, janky animation editor UI - Optimized console a bit - Bug fixes

Here is a scene from Aubrey's DogTomb.xml that I added in a27.

Thanks as always for all the support! See you guys in IRC and the forums.