made hardcoded spaceship1 fire bullets every tick
added documentation to IDrawable
created spaceship copy-ctor
override Object.clone() in spaceship
made getters in spaceship return copies instead of references
created deep-copy ctor in projectile
made spaceship and projectile Cloneable
made getIDrawables return deep clone of hashMap drawables
Merge branch 'master' of https://github.com/Kuxe/oopprojekt
Merge branch 'master' of https://github.com/Kuxe/oopprojekt
corrected mistyped methods