Last time's Windows bugs:
	Look at gitweb log...

Hud:
	Avoiding the problem from last time
		Have a separate overlays list
		An overlay has init and draw
		They don't have instances

Practicalities:
	example_engine had a make_program function
		Makes an OpenGL Program
		I've wanted one anyway...
		Can extract this from GameObject::init in gameobject.cpp
	Other than that, the code is mostly compatible
		We'll have to inherit from our GameObject class, if we want to

Code import time!
	I think I've found the problems...

imgui:
	The code for this is really simple
		It's all in main.cpp on engine
		Or the Hello Triangle demo
	The trick is building it!
		Might be different on Windows, as usual
		"The core of Dear ImGui is self-contained ..."

Let's check out the repository and build the demo
	Easy enough (I hope!)
	Worked for me earlier...

Note the list of files that we had to build
	These will need to be in our Makefile
	Or included in our project

So our list of things to do:
	Import the few lines we need to run the demo
	Add the imgui files to our makefile (or include built versions)
	Add include files
	It should work!

What if somebody wants to build without imgui?
	#define, since imgui makes it more complicated to build