Make CMake a bit less verbose and fix warning about missing target FFmpeg
#61 Allow streams to be passive and receive distributed packets
Merge pull request #82 from Yalir/bugfix/61_FeedingDeadlock

Bugfix/61 feeding deadlock
Merge remote-tracking branch 'origin/master' into 6_Seeking

Conflicts:
	src/Demuxer.cpp
#6 Make sure seek target is in valid range
#6 Don't store null streams (fixes crash on some medias)