v0.2.3

• muxer: skip unwanted stream packets
• GL:
  • support gbrp formats
  • improve yuv to rgb
  • xyz gamma correction
• generic color space, trc, primaries support. done in renderer, demuxers and decoders(FFmpeg, VT, AMediaCodec, MFT)
• android AudioTrack: do not use deprecated 7.1 channel value, which may not work in new OSes
• FFmpeg:
  • fix sw format after seek
  • check hw pixfmt of decoded frame, fix sw fallback
  • support avcodec options via property, e.g. FFmpeg:thread=2
• fix annexb check for CUDA, MFT, AMediaCodec decoder
• try next decoder set by user if failed to decode a frame
• AMediaCodec decoder:
  • profile, level and capabilities check before using a codec
  • fix nv12 plane line size in copy mode
  • async mode support
  • detect decode error
• VT decoder(VideoToolbox): add property "copy"
• MFT decoder:
  • apply property "copy", "pool" on the fly
  • fix annexb check
• raspberry pi:
  • enable builtin mmal decoder. decoder name is "mmal", while FFmpeg's is "MMAL"