Parallax implemented! Refactored lots of stuff too
So much stuff... can't even remember
started working on Screens
screens pretty much working. Drawables added
Fixed Drawables. Added start screen, refactored lots of stuff
OVNI stuff: explosions, etc.
Canvas text support
onKeyPressed:do: implemented

Added pause and endgame screens, added enemy bullets, etc etc
Menus
Menus are now part of Ludus. Game and Screen refactored into an abstract class
ready to deploy Ovni
Concluding merge
removed Ovni from master