1.6.0

Added

• asr_client/__main__.py: --audio-prepend-silence <ms> option: prepends zero-filled PCM silence to the audio stream before sending to the ASR service; works for both --audio-paths and --audio-mic; useful for priming the detector when the utterance starts immediately at the beginning of the audio.
• asr_client/__main__.py: --audio-append-silence <ms> option: appends zero-filled PCM silence to the audio stream; works for both --audio-paths and --audio-mic; useful for ensuring the detector has enough trailing silence to finalise the last utterance.