v0.12.1

Fixed

• A device whose live-context entry ends with its areas (a light that is off, a switch
  or a button in an area) was refused as matching more than one device, with itself as
  the only candidate, and no action was proposed. Its entry is now compared without the
  blank line Home Assistant ends its answer with, so it no longer depends on where the
  device sits in an answer. The same difference could also single out one of two devices
  that print the same, instead of refusing both; they are refused again.
• A streamed answer whose text the core replaces, such as a device that was not found,
  now streams the replacement whole after what already went out. The streamed part used
  to end mid-sentence, or run into the end of the replacement, and the replacement could
  be lost. The final line and the conversation keep the replacement alone.
• A secret longer than the stream's hold-back window, such as a long-lived access token,
  could stream in part before the rest of it arrived and was redacted. Text that may
  still become a secret now stays back until it is complete: a run of key characters
  that has not ended, Bearer or Token before it, and the start of a configured
  secret value. Text written without blanks still streams.