v1.2.0

State changes cost less CPU on the broker and on workers, and Home Assistant traffic arrives in fewer, cheaper frames.

Changed

• MQTT and Valkey connections turn on TCP_NODELAY, so a burst of small packets no longer waits on delayed ACKs
• The Home Assistant client asks for coalesce_messages, so a burst of events arrives in fewer WebSocket frames
• The runtime image keeps compiled PHP in /tmp (opcache.file_cache), so workers and console commands after the
  first start without compiling the framework again; code is still revalidated when files change
• A state change's from comes from the worker's state cache, so it is always what getState() returned just before
  the change
• Workers receive only the new state of each change, and the broker no longer decodes Home Assistant's old_state,
  so each state change costs less CPU on the broker and on every worker
• The broker encodes state changes, snapshots and history for workers with hand-written converters instead of
  reflection, and waiting on one entity no longer clears every other entity's cached routing match

Fixed

• stewart status, app:pause, app:resume, app:reset and worker:restart fail at once when no daemon
  listens, instead of retrying the control socket for six seconds whatever --timeout says
• A Home Assistant frame with invalid UTF-8 is logged and dropped, instead of closing the connection and forcing a
  resync