Trivial cleanups in header files.
Print newline before message in signal handler.
Add notes. Start building Python module with useful algorithms.
Fix bug in Python code for reading raw samples.
More notes about gain and filters.
Print device name on stderr.
When invalid device index specified, print list of detected devices.
Better handling of "-d list".
Reject IF sample rates 900kS/s or lower because RTL chip does not support it.
Fix mistake in note about forbidden sample rate range.
Add comments to Python code.
Update notes.
Add Python functions to demodulate FM and to measure quality of 19 kHz pilot.
Reorganize notes; measure effect of LNA gain, ADC calibration.
Python code to experiment with IF filtering.
Simulated effects of IF filter bandwidth.
Experimented with IF gain and AGC mode; does not seem to help much.
Set RTL AGC mode by default (no improvement), with command-line option to disable.
Update TODO list.
Implement k, M suffixes for frequency and sample rates.
Fix incorrect use of uint8_t, FILE, etc. outside std namespace.
Prepare pilot PLL to produce PPS events.
Pilot PPS logging works.