v0.1.6 — sipbot play accepts mu-law and A-law WAV files

v0.1.5 — CallRinging event for outbound calls

v0.1.4 — registration recovery, transfer and NOTIFY fixes, clean unre…

…gister, PSTN target normalization

v0.1.2 — play/resample and negotiated codec for agents

v0.1.1 CI: contents:write for GitHub Releases

v0.1.0 sipbot linux-x64 agent packaging