v0.9.9 as uploaded to pypi (convexengineering#1467)

Python 3 compatibility (convexengineering#1405)

* cleanup hashing so hashvalue can be copied
* deterministic sweep ordering
* copy on write for keydict

version 0.8.0 as uploaded to pypi (convexengineering#1389)

version 0.7.0 as seen on pypi (convexengineering#1284)

v0.6 as seen on pypi (convexengineering#1197)

V0.5.3 (convexengineering#1117)

* remove linked from manifest
* catch Windows error in build script, closes convexengineering#1108
* use tail, not sed. by @edfan, closes convexengineering#1102

* version number update and release notes

v0.5.2 as released on pypi (convexengineering#1037)

* update MANIFEST
* year, version, release notes

v0.5.1 manifest and documentation (convexengineering#1023)

v0.5.0 (convexengineering#954)

* preparation for version 0.5
* remove unused gitmodules file
* update release notes
* following coverage, remove unused code
* add mailing list / chatroom links
* pylint
* gpkit version 0.5.0.2 as uploaded to pypi
* pylint

* update release notes

* unitstr -> latex_unitstr, small refactors (convexengineering#973)

* rename varkey.unitstr to varkey.latex_unitstr
* minor improvements from convexengineering#965 review

v0.4.2.1 as released on pypi (convexengineering#922)