Please keep changelog up to date.

[nedbat]

You are now at version 1.7.12, but changelog.rst only goes up to 1.7.7. The docs on http://andreacensi.github.io/contracts/ say they are for 1.7.2, and the changelog goes up to 1.7.5.

Ideally, you'd keep a CHANGELOG.rst in the root, so that sites like requires.io could display the changes more easily.