Prep for 0.77 release.
Version 0.76.
Test on python 2.7, 3.4, 3.5, 3.6 and pypy.
Update CHANGES. Remove pdb slop.
Prep for 0.62 release.
Prep for 0.61 release.
Tag for 0.60 release.
Release 0.52
0.51 release
Prep for 0.50.