RealtimeTTS 0.8.6

Adds Qwen GPU and CPU server installation extras, restores tests/faster_qwen_emotions.py, and includes em-dash streaming, language detection, segment controls, and CPU onset recovery. The portable CPU build reproduced the Linux baseline audio; measured first-audio latency was 4.5–6.9 ms higher than the server-specific build, an accepted portability trade-off. See the installation documentation for supported platforms and requirements.