Added a useful hsv adjustment function.
Added a useful hsv adjustment function.


danieldresser/cortex,danieldresser/cortex,goddardl/cortex,goddardl/cortex,lento/cortex,hradec/cortex,lento/cortex,hradec/cortex,danieldresser/cortex,danieldresser/cortex,davidsminor/cortex,hradec/cortex,appleseedhq/cortex,lento/cortex,davidsminor/cortex,davidsminor/cortex,goddardl/cortex,appleseedhq/cortex,davidsminor/cortex,appleseedhq/cortex