vrld/hump — pull request #40 by cigumo (2014-10-27 02:18:50+00:00)
Title: adds flip_y flag to hump.camera to invert the y axis

This flips the y axis so positive is up on the screen.
I don't like the way the parameter is passed (as a boolean flag flip_y) but I did this for backward compatibility.

Warning: not thoroughly tested.