improve cpack config, add doxygen config
improve doxygen
fix class comments
add supersampling
Merge branch 'add_doxygen_config' of https://github.com/voxelinc/voxellancer into supersampling
add better ssaa/fxaa config
draw hud again - make it configurable
add constants for antialiasing mode
Merge pull request #493 from voxelinc/supersampling

add supersampling