Verbose mode
Move averaging of images to utils
Refactor xraylib-calibrate
Base class for scripts and verbose_print method honoring command line options
Add timing to scripts
Fast reading of edf in averageImages. Move to files.py
Work on xraylib-average
Add arithmetic mean
TODO
Pretty printing
Don't load xray data unless needed
Fix path
Typos
Add calibration settings to script
Add first running version of xraylib-integrate