Lectern

Feature
* Make it possible to raise an error if there was nothing in the message ([`165330e`](https://github.com/mcbeet/lectern/commit/165330e29e490860107d2755f09a0aa3f9d9c03a))

Fix
* Don't add namespace title when the namespace is empty ([`adfa7e5`](https://github.com/mcbeet/lectern/commit/adfa7e5493d4fc05df2e771c59f8e455c4e239c2))
* Properly convert serialized content ([`3301864`](https://github.com/mcbeet/lectern/commit/3301864338413427ac7ab14e6aa0b7fb0e56d55f))

Feature
* Change serialization filter for pytest snapshots ([`aea38cf`](https://github.com/mcbeet/lectern/commit/aea38cfd2db89b8d4470fa0805b54b5e2752d231))

Feature
* Add serialization pack filter ([`c841d6b`](https://github.com/mcbeet/lectern/commit/c841d6b6eb7dea115c3d2a791f36cca672362aaf))

Feature
* Update beet to default to 1.19 ([`4f2f2e9`](https://github.com/mcbeet/lectern/commit/4f2f2e901dbe6f80f5b000e2ee6abe78546b9f96))

Fix
* Don't do fancy concatenation ([`8d7dd36`](https://github.com/mcbeet/lectern/commit/8d7dd367553524ca061e92edb6c78f9f0fd4ce4c))