pudo/dataset — pull request #101 by xrotwang (2014-07-25 10:19:17+00:00)
Title: ported freezing as csv to python 3.4

With this commit freezing to csv files works on python 2.7 and 3.4 (on Linux). I also added a test case that makes sure, round-tripping between `TEST_DATA` and freeze as csv works (to the extent possible).