v0.15.0

New major features

• Support reading with RTMP (#218)
• enable rtmp by default; add parameters to disable rtsp and rtmp

Fixes and improvements

• improve performance and eliminate idle load (#184)
• fix removal of RTMP clients
• fix reading mpegts-muxed streams with ffmpeg (#222)
• support OBS <= 25 and a lot more RTMP clients
• support some additional hikvision cameras (#227)
• fix error "frame length greater than maximum allowed" (#229)