another huge update, many improvements, fine-tune collision, fire and…

… some other FX

-removed classic fire render as palette now looks much better
-tweaked fire parameters to more awesome
-added (optional) turbulence to fire using perlin-noise
-ported spray FX to use PS-class
-now definitely fixed asymmetrical collision issue: do not use bitshifts on negative numbers!
-changed piling behaviour of particles, full rework. looks way more natural now and works much better
-changed bouncing behavour: they now bounce at full diameter, making them stay fully in frame when laying on the floor
-replaced all relevant bitshifts with divisions for higher accuracy throughout the PS
-added new modes to particle box FX
-changed a lot of FX parameters (finetuning)
-changed all config strings to proper settings (matrix only)
-fixed newly introduced bugs
-added speedup/slowdown to vortex FX (aka candy, aka rotating sprays)
-some renaming
-fixed bugs… lots of bugs
-merged rendering functions, removed obsolete stuff