News for trackballs v0.9.0 (freshmeat announcement)

Created new levels and objects in game: cactus, birds, side spikes, teleporters, fountains.
New calculations for visible cells. Added possibility for water and arbitrary 
textures on maps and splash effect when in water or acid. Added Sparkles around 
mouse in menus. Many new shortcuts in editor added and many bugs fixed. Also introduced extra features 
such as pausing (press 'p'), taking screenshots (press 'print screen'), batch updating of old levels, etc.