Added support for multiframe dicom scan data.
Handled cases where ellipse could not be fitted to the points. Fit circle instead.
Exclude points that do not have gamma calculated from pass/fail calculations
Updated to use image position from detector sequence for multiframe NM images.
Updated to make use of CTLevel and CTWidth from the DICOM header
Merge branch 'master' of github.com:adityaapte/CERR into compiled