Build v2.0

Added : noise generation

added new options:

-rgbv, --rgbvariation	set rgb variation	0 0 0	*
-nc, --noisecoverage	noise coverage fraction	0.0	*

* can only be used in conjunction, be aware that even with the use of multithreading, the noise generation can take a lot of time depending on your map size. Roughly 30s for 8k*8k, 15min for 30k*30k.