Freezerbox

Feature
* Improve maker plugin API ([`71fec2b`](https://github.com/kalekundert/freezerbox/commit/71fec2b3eca51d51a41cef1eded30b05098aa294))

Fix
* Wrong option name in usage text ([`2bac1fd`](https://github.com/kalekundert/freezerbox/commit/2bac1fd072524aebb0c84de9223a165a580a0a53))
* Improve error messages when loading tags from Excel ([`10a435b`](https://github.com/kalekundert/freezerbox/commit/10a435b5701441cea56d408559f6c80dfbffc28a))

Documentation
* Describe the role of the IntermediateMixin class ([`b42dc9f`](https://github.com/kalekundert/freezerbox/commit/b42dc9f1b77798e030da1c1c359eadf94ef56a66))

Fix
* Allow repr to fail gracefully ([`fa1e90c`](https://github.com/kalekundert/freezerbox/commit/fa1e90ceff8eac541e16379875df73199ca0adb0))

Feature
* Upgrade to BYOC ([`bf4dcd3`](https://github.com/kalekundert/freezerbox/commit/bf4dcd326a0d9cebbfa22dcb3d9bcdd896b64462))

Feature
* Support loading from specific XLSX worksheets ([`c98f0e0`](https://github.com/kalekundert/freezerbox/commit/c98f0e07fafe56819026af0840bc33646cfae805))

Fix
* Fail gracefully if the database can't be loaded ([`2bd1037`](https://github.com/kalekundert/freezerbox/commit/2bd1037036e6fefaa19fb5a4a8ba6d1f41496003))
* Ignore leading/trailing whitespace in sequence strings ([`3a68766`](https://github.com/kalekundert/freezerbox/commit/3a6876616054b1ca50ca1d121806d49b6fc1b646))

Feature
* Read protein sequences from snapgene '.prot' files ([`4e0f1af`](https://github.com/kalekundert/freezerbox/commit/4e0f1af0e79a3c6265aa33f9f02dfa7f98cbdb3d))

Feature
* Allow small numbers of mismatches in feature sequences ([`ac5344c`](https://github.com/kalekundert/freezerbox/commit/ac5344c00c052a98f6572639c7632cb1b2b3780a))