added two config options:
disable_shader: will turn off the use of shaders and fbos in the game. there is no full replacement for them, however.
disable_audio: guess what.
both options *should* be activated automatically as soon as something goes wrong.
Bullet creation and death effects (don't know what is new in detail), improvements on the "API", especially around create_projectile() and extensive use of particles in addtion with generic particle/projectile movement and drawing rules (see projectile.h)
added some kind of reference system (see list.h) to ensure particles/projectiles/enemies storing pointers to each other that they will not access a borked address.
To create a slave, pass ENEMY_IMMUNE for hp in create_enemy(). tip: create_enemyg(...) is an abbreviation for create_enemy(&global.enemies, ...).
There is something like a super fancy event system for Enemies' logic rules now: logic_rule will be called with t = negative special values like EVENT_BIRTH or EVENT_DEATH on corresponding events. cool, isn't it? well those values have to be filtered out (like if(t < 0) return;) if you don't use them so they don't do strange things with your locus.
