HackRF Spectrum Analyzer v2.70

Added:

new features:

• Audio demod of WAV/PCM IQ files while REPLAY in spectrum mode
• Audio demod track included in VIDEO MP4 format recording (except in LIVE spectrum mode)
• Video recording option (audio demod track included in MP4 format) in IQ time domain analyzer mode (settings cloned from spectrum mode)
• Direct HackRF Tx option of WAV/PCM IQ files while REPLAY in spectrum mode (orig/custom center freq setting, Tx power slider)
• Frequency snapping to 1 MHz while selecting ZOOM in LIVE mode, otherwise to 0.1 MHz while selecting ZOOM/IQ analyze range in LIVE/REPLAY mode
• CTRL key disables frequency snapping

fixes:
small DC/spur filter tuning