Rework game loop logic to fix speed problems
Fix bug: never updating on long render
Fix a small mistake
Merge pull request #192 from gmorenz/fix-game-loop

Fix game loop
Make gameloop simpler, and fix #194

Pushed all the logic away from the rendering code into the update while condition, and a wait condition afterwards. Utilizes sleep for waiting instead of burning cpu cycles, at the cost of accuracy (accuracy could be re-introduced with a while loop below it if there is a good reason to). Fixes #194 by only updating to the update before catching up/passing next_render.
Fix sleep overflow bug
Merge pull request #195 from gmorenz/simplify-gameloop

Make gameloop simpler, and fix #194
Put gl-rs before hgl-rs to indicate build order
Updated symlink info
Merge pull request #198 from bvssvni/master

Updated symlink info
Added link to piston-workspace

Closes https://github.com/PistonDevelopers/piston/issues/199
Updated symlink info
Merge pull request #201 from bvssvni/master

Updated symlink info