v2.6.0
- fix: deeply nested JSON body crashed the loop → now 400
- fix: WebSocket auto-pong on full send buffer crashed the loop → now closes
- fix: custom/unknown response status codes raised KeyError
- change: default max_waiting_clients 5→32, listen backlog 2→8 (higher RAM use)
- docs: README defaults synced, respond_file path-traversal warning