Version for python 3.7

New version compiled with Python 3.7
Includes few bug fixes and possibility to run on flight.

Final release for QA

Main fix for wavelength calibration

Release for QA

This release includes plotting of wavelength, and possibility of processing an entire directory.
Moreover, a file containing all excluded observations is produced.

Release for QA

Added grating position on plot

Release for QA

Red and blue arrays are analyzed.
Elegant way of disconnecting QObject class implemented.

Version for QA

Added capability to treat red and blue arrays

post NZ release

Improved response of GUI by threading the ramp fitting.
Added case of variable number of grating positions.
Improved style-sheet.

final NZ release

Several cases added.
Still to solve problem when number of grating scans changes during observation.

3rd release for NZ flight

Corrected error in saving JSON files

2nd release for NZ flight

Added save/restore capability using JSON files.