Update Changelog

For your perusal, the diffs for each version:

* https://github.com/halogenandtoast/monban/compare/v0.0.6...v0.0.7
* https://github.com/halogenandtoast/monban/compare/v0.0.7...v0.0.8
* https://github.com/halogenandtoast/monban/compare/v0.0.8...v0.0.9
* https://github.com/halogenandtoast/monban/compare/v0.0.9...v0.0.10
* https://github.com/halogenandtoast/monban/compare/v0.0.10...v0.0.11
* https://github.com/halogenandtoast/monban/compare/v0.0.11...v0.0.12
* https://github.com/halogenandtoast/monban/compare/v0.0.12...v0.0.13
* https://github.com/halogenandtoast/monban/compare/v0.0.13...v0.0.14