Release of iota 0.3.0-alpha done

[solidstate1991]

https://github.com/ZILtoid1991/iota/releases/tag/v0.3.0-alpha

Intended as a D language native replacement for SDL/SFML/GLFW, 
now is starting to become a minimum viable alternative.

Now it can support input polling and some windowing under 
Windows. OpenGL framebuffer support started but not yet completed 
(only applicable if your application don't already has one), and 
Linux support for these haven't yet started.

Also I would appreciate some help, especially with Mac (and maybe 
mobile) support.