make use of compact texture ctr
naive decoupling sky pass from light pass
added textureLod uniform
adopt getter
typo and format
fixed #48

because of our fixed time step wire integration, the sim wire isn't
always steppd in one application loop step. this resulted in dropped
events. it's fixed with one inject step.
fixed mouse position retrival
doc
fixed toggle
added a spin wire

spin wire: a wire to adjust values between a range based on a up and
down event
doc