Desktop GL Support Through Glow

[zicklag]

I was wondering whether or not you would be open to supporting desktop GL through use of the glow library.

I've succesfully ported a Rust WebGL2 renderer ( luminance-webgl ) to run on desktop with glow before and it was, for the most part, quite straight-forward. Would you be open to a pull request for that? I'm not positive this is something I will do, but I wanted to make sure that it was something you would be open to.