First stab at CLI progressbar

Not coorporating with log level DEBUG or TRACE at this point...
made progress bar work properly
Added progressbar to reader

As a side-effect, also added functionality to stop polling after N expected frames
Only display progressbar if DEBUG is not on

This resolves the conflict between log4cxx debug and trace and the progressbar
Cleaning up CLI output and logging
Merge branch 'progressbar'

Conflicts resolved:
	src/swmr-reader.h