v0.1.6, 2014-03-14 -- random collapse bug fixed
v0.1.5, 2014-03-14 -- tiles don't spawn if nothing moved, like in the original game
v0.1.4, 2014-03-14 -- best score support, bug fixes, minor UI improvements
v0.1.3, 2014-03-14 -- using setuptools
v0.1.2, 2014-03-14 -- better documentation, working executable
v0.1.1, 2014-03-13 -- executable environment fix
v0.1.0, 2014-03-13 -- Initial release
