Cytadela 0.9

At last, after several years of development, I can finally announce a fully playable conversion of the great Amiga game, Cytadela! This version, 0.9, brings all the levels of the original version with all in-game features.

Some other notable changes are:
    * the game finally works on big-endian systems (many thanks to Tomasz Wiśniewski for his help with testing the big-endian support)
    * two info screens showing information about in-game controllers, created by Marcin 'Senkal' Sękalski (the screens are displayed before training levels)
    * WASD keys as alternative keys for walking (forward/backward and strafe left/right)
The full list of changes is available in the change log.

The final version, 1.0, will bring just fixes of bugs found in 0.9 and perhaps some minor improvements.
