version 0.94 (major beta): stars, ground, more enemy abilities, menu

version 0.94 (major beta): stars, ground, more enemy abilities, menu

+ starfield background scrolling left (2 layers (front and back))
* enemies aim their bullets towards you: 5 different directions!
# removed some unintended <add a,a> instructions
* gamefield is now white on black instead of normal black on white!
+ enemies can also move slowly, fast, very fast, or 1st fast then slow
# you can't fire when you're exploding
+ GROUND scrolling at bottom. You die if you hit the ground (!!!)
  (unlike the ground in version 0.925test there are NO bugs)
+ ceiling scrolling at top, just like the ground
* ground and ceiling profile are different each level
* ground and/or ceiling can be non-present (speeding up cause skipped)
# no more BIG crash if enemies fire too much bullets ( >10)
+ frequency of enemies firing bullets differs per level
* stars scroll at alternate speeds, different than any ship/pick (3/4)
+ special effect displaying titlescreen (stole from Spaze Invaders'83)
* enemies can fire either directly on entering the level, or not
+ "tunnel" (playfield) can narrow/grow at random (depending on level)
* minimum size of "tunnel" can be different per level
+ menu at startup. select "NEW GAME" and "LOAD GAME" with up/down
- nemesis doesn't use the SpazeInvaders effect anymore (took too long)
+ choosing new game will display a demo first (text will be displayed
  with special effect [SI] saying the storyline will come soon)
* levels altered to be more challenging and different (seven levels)
# the usual bugs that come with new features removed (i think?)
* you get 5 shield-points at start and after death