PistonDevelopers/piston — pull request #556 by bvssvni (2014-08-18 08:18:57+00:00)
Title: Removed `ConcurrentGame` and `Game`

Closes https://github.com/PistonDevelopers/piston/issues/555

For fixing existing code, see
https://github.com/PistonDevelopers/piston/issues/521