Subpixel Azimuthal integration using pyFAI for Area detectors

Currently we are doing Azimuthal integration based on just sum of pixels in which binning does not take care of partial contribution from neighboring pixels which can be improved by including sub-pixel techniques based codes such as pyFAI. It is already done in EXtra-foam (previously called KaraboFAI) by Jun . This is supposed to increase data analysis specially for detectors with large pixels such as DSSC.