aichat 0.22.0

[BrewTestBot]

Created by brew bump

---

Created with brew bump-formula-pr.

release notes

## RAG Changes 
Store RAG in YAML format instead of bin format
We used to store RAG in bin format at <aichat-config-dir>/rags/<name>.bin. However, the bin format has various drawbacks, so we are now using the yaml format to store RAG.
All RAGs in bin format will be ignored. Please recreate them in YAML format.
Support for RAG-scoped top_k and reranker_model options
Now, users can set the top_k and reranker_model parameters individually for each RAG.
.set rag_top_k 5
.set rag_reranker_model cohere:rerank-english-v3.0

New REPL Commands
.delete                  Delete roles/sessions/RAGs/agents
.save agent-config       Save the current agent config to file
.sources rag             View the RAG sources in the last query

New Features

add config serve_addr & env $SERVE_ADDR for specifying serve addr (#839)
better html to markdown converter (#840)
add role %create-prompt% (#843)
tolerate failure to load some rag files (#846)
support RAG-scoped rag_top_k and rag_reranker_model (#847)
save rag in YAML instead of bin (#848)
chat-completions api supports tools (#850)
support rerank api (#851)
abandon config rag_min_score_rerank (#852)
add .delete repl command (#862)
no delete the existing role/session when saving with a new name (#863)
specify shell via $AICHAT_SHELL (#866)
role/session/agent should not inherit the global use_tools (#868)
add .save agent-config repl command (#870)
add .sources rag repl command (#871)

Bug Fixes

render stream failed due to read cursor position timeout (#835)

[github-actions]

🤖 An automated task has requested bottles to be published to this PR.