caltechlibrary/acacia: Two new commands, cleanup messages and cleanup doi

This release features two new commands `cleanup-messages` and `cleanup-doi` for cleanup the message and doi tables. These commands are suitable for running on a nightly or weekly cronjob. The release also features performance improvements in `/manage-doi` as well as cleaned up error messages when processing DOI. ## What's Changed * Improvements in performance and error messages by @rsdoiel in https://github.com/caltechlibrary/acacia/pull/24 * cleanuped up code, added cleanup-doi command by @rsdoiel in https://github.com/caltechlibrary/acacia/pull/25 **Full Changelog**: https://github.com/caltechlibrary/acacia/compare/0.0.12...0.0.13