Small fix
Merge remote-tracking branch 'origin' into R-peaks
Sample number to time method in ECG channel info
New mocked signal. Minor fixes for PanTompkins
File text with mocked signal.
Merge with R-peaks
Fix for mocked signal  reading. Debug changes
Merge with master
Merge
Merge with R-peaks
Merge stplot.cpp
Modify ST intervals and episodes lists.
Fix NaN problem