Solved a little precision issue and minor changes

- fft_size was wrong
- added a little makefile rule to compile with debug support
Solved a little precision issue and minor changes

- fft_size was wrong
- added a little makefile rule to compile with debug support
Merge branch 'note_finder' of https://github.com/berdav/pick-midi into note_finder
removed a debug printf
Merge pull request #4 from berdav/note_finder

Note Finder