ignore vertex buffers 'till underlying systems are in place. creating a swap-chain and resizing it.
windows now take a size
added device for per-window contexts
Merge branch 'master' of https://github.com/omnigoat/shiny

Conflicts:
	source/main.cpp
context now in its own file. window->fullscreen->window works properly, if a little hacky in context_t::toggle_fullscreen()
context things