Sentry-arroyo

Various fixes & improvements

- feat: Avoid spinning on MessageRejected (253) by lynnagara

Various fixes & improvements

- feat: Basic support for librdkafka stats (252) by untitaker

Various fixes & improvements

- add entries to list (250) by ayirr7
- ref(multiprocessing): Rename some metrics and add documentation (241) by untitaker
- feat(metrics): Allow reconfiguring the metrics backend (249) by lynnagara
- ref: Global metrics registry (245) by untitaker

Various fixes & improvements

- fix: Fix run task in threads (again) (244) by lynnagara

Various fixes & improvements

- fix(run-task-in-threads): Fix shutdown (243) by lynnagara
- fix: Mermaid diagrams in dark mode (242) by untitaker

Various fixes & improvements

- Revert "feat: add more item size stats to multiprocessing (and metrics refactor) (235)" (240) by untitaker
- fix(multiprocessing): More performant backpressure [INC-378] (238) by untitaker
- fix(multiprocessing): Honor join() timeout even if processing pool is overloaded [INC-378] (237) by untitaker
- docs: Minor readability details (236) by kamilogorek
- feat: add more item size stats to multiprocessing (and metrics refactor) (235) by untitaker