Combadge

- fc2e365 NEW: work on the docs
- b173e45 OPT: cache `bind_class()`
- f1c1a70 NEW: extract `bind_class()`
- 5e0730e NEW: extract `bind_class()`
- 14fd69a OPT: extract the `MethodBinder` interface
- c5b424a Generic API client based on Pydantic

- 6ff5877 NEW: add `codecov.yml`
- bc7033f NEW: implement the `ServiceContainer`
- 0acf933 NEW: integrate MkDocs

- fb44679 FIX: the release condition
- 3b282f4 OPT: make the caching step very first in the pipeline
- e7d7b99 OPT: only update a release body if it's empty
- fe9629b OPT: only update a release body if it's empty
- a1d1e48 NEW: add the publishing pipeline

**Full Changelog**: https://github.com/kpn/combadge/commits/0.1.0.dev1