Fixed cmake stuff.
Added audio support.
Added add and remove entity.
Documented Entity a bit more.
Added licence and copyright notices!
Fixed copyright notices.
Removed trailing whitespace.
Added full stop.
Fixed vera complaints in Audio.
vera-ified graphics.
Vera-d System.
Vera-d utility.
Fixed stupid error.
Take operator args by const&
Moved modules into cmake/modules dir
Merged the world
Merged all of the things