0.0.8

Changes

• Game updates now run in another thread
• The body physics simulations are now multithreaded using cpp's execution policies
• Added a way to quickly spawn many bodies at once

Pull requests

• Dev addfastspawn by @ultraflame4 in #1
• Dev 0.0.8 by @ultraflame4 in #2

Full Changelog: 0.0.7...0.0.8