* __Feature:__ New API call to reload configuration from disk on demand * __Feature:__ MistServer will now automatically reload the configuration a few seconds after it changes on disk, and write changes to disk after a minute of no changes having been made (behaviour can be changed through command line flag) * __Improvement:__ The internal UDP API now writes its listening host and port to shared memory * __Improvement:__ Code cleanup and speed improvements for the RTP library (affects WebRTC, RTSP and SDP inputs/outputs) * __Improvement:__ WebRTC output now uses packet pacing to prevent sudden bursts of packets * __Improvement:__ Certbot integration shows more helpful errors messages now on failures * __Improvement:__ SRT input now correctly sets internal UTC timestamps * __Improvement:__ Changed "always on" behaviour to simulate always having a viewer rather than running on an entirely different code path * __Bugfix:__ TS-based HLS output now works with audio-only streams again * __Bugfix:__ Trigger success reporting, User Agent logging and the Certbot integration now work out of the box on practically all systems * __Bugfix:__ SRT sockets now correctly set their default options in all cases, and inherit options from their parent socket * __Bugfix:__ H264 filler NAL units no longer cause a dropped frame on RTP-based outputs (affects WebRTC, RTSP and SDP) * __Bugfix:__ Certbot integration no longer fails getting a certificate when one already existed * __Bugfix:__ A manual push (bypassing the API) to a local file target no longer fails * __Bugfix:__ HLS push output small segment prevention now correctly only triggers for VoD sources * __Bugfix:__ Fixed a rare segfault in the controller when shared memory could not be initialized * __Bugfix:__ Fixed a segfault when using an extremely short (or blank) source parameter * __Bugfix:__ SRT inputs no longer get detected as VoD-capable * __Bugfix:__ Fixed JSON library UTF-16 to UTF-8 conversion for high codepoints (e.g. emoji)