Write the game history

[arthurmco]

Start writing the game history.
I have a summary of the game history, but I'd like to write it, completely and nicely, somewhere, here.

Probably I'm going to use the wiki for that

But first...

• Stabilize the game engine
  Make it stable, ie without crashing enough for people to play
• Support a popular model format
  A popular model format, like fbx or collada (see Add support for collada models #3), would encourage people to develop models based on these histories.
• Ease the development of buildings and units