Release version 0.13.0

Looks like version 0.12.0 used to exist on PyPI even though that was
never official. Jumping ahead fixes this.

Fixes lesscpy#94

Bump to version 0.11.2

Bump version to 0.10.2

Bump version to 0.10.1

Merge pull request lesscpy#32 from saschpe/master-stuff

Master stuff

Signed 0.9j

Signed 0.9i