first work on starfield
use player speed, fix memory error
unlimited size starfield
remove unused variable
use polygonal stars with alphablending. fade in new stars. use a vertex array with structs. #260
improve code
fix hd3000
Merge branch 'starfield' of https://github.com/voxelinc/voxellancer into starfield
update glow
Merge branch 'master' of https://github.com/voxelinc/voxellancer into starfield

Conflicts:
	src/game.cpp
	src/game.h
	src/main.cpp
field from position delta
implement boardcomputer - untested
Merge branch 'master' of https://github.com/voxelinc/voxellancer into starfield

Conflicts:
	src/game.cpp
	src/game.h
	src/main.cpp
activate GLM_FORCE_RADIANS because otherwise some functions (cos, acos, tan,...) return radians and others (angleAxis, quat(euler), ...) need degrees. Now everything is in radians!
following is possible, rotation is coming soon
add rotation
fight
small linux compilation fix
personal preferences + space battle
basic fighting task, similar to followtask of boardcomputer