version 0.9 (public beta): upgrade select (armor, torpedoes), readme

version 0.9 (public beta): upgrade select (armor, torpedoes), readme

# pickups no longer fire bullets like normal enemies
+ <halt>s added so the game runs slower and looks better
+ TORPEDOES!!! Bullets that fire downwards! Just like in Nemesis
* pickup selects the next icon on bottom bar instead of increasing hp
+ an icon can be taken by pressing F2. second icon selects torpedoes
+ first icon increases armor, icon 3 and 4 are unused for now
* selecting an unused icon (3+4) resets pickups like icon 1 and 2
* when you're destroyed, you loose one life instead of going game over
  you also loose all upgrades and pickups, but remain in t same level
* random is more randomized, no more "tricks" to fool the randomizer
# after gameover the game is terminated instead of continuing+crashing
- no more armor to start with. you'll have to collect them on your own
* of course optimizations and a few tiny bug fixes (not important)
* increased the size of the enemy bullets so they're better to see