Added new NLOWWEIGHT_ISO and NLOWDWEIGHT_ISO parameters that count the number of bad pixels within the measured isophotal footprint, and within one pixel of the detected isophotal footprint, respectively.
FLAGS_WEIGHT is now working without crashing.
Pushed version number to 2.9.3.

Added computation of FLUXERR_MODEL and MAGERR_MODEL.
Fixed a numerical bug in E1MODEL_IMAGE and E2MODEL_IMAGE.
Improved onscreen display.
Pushed version number to 2.8.7