mark decoding errors
optional Clipping in inline function
generate unavailable reference frames
Merge branch 'master' of https://github.com/strukturag/libde265
only use mutex around cond.broadcast on Win32
remove obsolet code from thread pool
cleanup of image class
move get_image_plane to image class
faster CRC-16 computation
conform to C99 inline specification
check for valid SPS/PPS header references