Rotation around the Z axis

Property definitions

	# Rotation around the Z axis
	var roll = 0.0 is writable

lib/gamnit/cameras.nit:51,2--52,27

	redef fun roll=(value)
	do
		super
		mvp_matrix_cache = null
	end

lib/gamnit/cameras_cache.nit:64,2--68,4