Added --queue/-q for tx which adds a queue between source and the rest of the pipeline
The value on the command line is in ms, and sets the max-size-time property on the queue element
If zero is specified (the default) then the queue is not added to the pipeline at all
This modification is an effort to debug some issues with sources on embedded platforms (e.g. RPi/BBB)
Merge pull request #18 from naxxfish/master

Added --queue/-q for tx which adds a queue between source and the rest o...