[boost] Extending GIL

Having looked up this repository : https://github.com/boost-gil/gil_threaded, I feel the idea was the same, but a lot of improvement can be made. For example, by using OpenMP, I feel the computational performance can be massively improved and that too, not requiring any extremely sophisticated hardware. Also, there was no provision for image conversion, which I feel is a very good extension. What do you all think?