Fix waterfall canvas to interact with active demod
Better multi-demodulator overlap hover handling
Adds test #define for default demodulator count
Font file
LodePNG
CMake updates
Font loader experiment
Font rendering functional: test string
Filtering mode
Simplify GLFont drawString usage
Unify demod drawing functions
Added frequency labels, 100khz intervals
Waterfall hover-state/interactivity improvements
Can now spawn infinite(?) demodulators by holding shift
Can now spawn/delete demodulators
Demodulator garbage collection
prototype drag range demod create/select tool
Can now press alt to drag demod range
Update README.md
Merge pull request #15 from cjcliffe/multiple_demodulators

Multiple demodulators and related interactivity