2.2.0

Features

• api: add support for message threads
• api: add usage and cost reports by dimension, mark older reports legacy

Bug Fixes

• client: stop suggesting math.inf in the max_retries error message
• tools: leave the tool runner's history to the caller after append_messages(), and keep the current reply out of the set_messages_params() callback
• tools: keep running the tool runner's function tools when set_messages_params() gives tools as definitions, and stop running one it takes out of tools
• tools: give the set_messages_params() callback of a tool runner its tools as definitions again
• tools: keep a tool runner's betas, user_profile_id and workspace_id when set_messages_params() leaves them out

Chores

• deps: bump certifi in the dev lockfile
• docs: clarify plugin content scan and validation descriptions
• docs: clarify plugin served_version_pinned and updated_at
• docs: fix usage and cost report examples and ending_at docs
• docs: rate limit model lists vary by organization and workspace