Added assert_end_position that finds the correct properties using the a passed in animation.
Added assert_end_color
added assert_location and updated assert_end_location to use the new function
Initial add of Test-playback-rate, does not use asserts in other file yet
Added assert_same function and updated test-groupings to use the new function
Modified test-color from the polyfill and added it and updated assert-color's epsilon based on testing
Merge pull request #2 from SHeimlich/master

New asserts and tests