Take m_FftCenter into account when drawing overlay.
Add a label for squelsh slider.
Add zoom support.
Implement centering on demodulator when zooming.
Make CENTER cursor capture consistent between move and press events.
Support horizontal dragging
Use retcode.
Drop unused variables.
Drop write-only variables.
Fix d_detector type (fixes unreachable cases).

The only reached case here was DETECTOR_TYPE_SAMPLE.
Use parameter value instead of looking it up from widget.
Silence -Wreorder warnings.
Re-Enabled GNU Radio audio sink. Define 'PULSEAUDIO' to use the pulseaudio sink instead.
updated readme
fixed sound bug
osx icon and minor fixes
no more crashing when turning demod off
re-enabled pkgconfig
rebased to zoom branch
Merge pull request #38 from vpelletier/master

Merge the horizontal zooming code; clean up later.