Reverted minimization algorithm back to double precision (while keeping single precision for data and parameters in "bounded" space).
Added specific handling of "Jacobian calls" in model-fitting.
Sped up the resampling process in model-fitting.
Tuned up minimization algorithm in model-fitting.
Added shortcuts to the computation of the local PSF model. 
Fixed triggering issues with some model-fitting parameters (thanks to S.Serrano).
Removed CLASS_STAR_MODEL and DISK_PATTERN* measurement parameters.
Added automatic tracking of the PSF FWHM from the local PSF model if SEEING_FWHM is 0 for CLASS_STAR.
Fixed excessive WIN parameter computation time on large ring-shaped objects.
Fixed model-fitting issue with null half-light radii (thanks to S.Desai and B.Armstrong).
Fixed aperture display value error in FITS-LDAC catalogue header.
Removed redundant update_tab() calls in FITS library.
Fixed comment copy issue for slashes within strings in FITS library (thanks to F.Schuller).
Added check of PSF values; SExtractor will now exit in error in the case where all PSF components sum up to 0.
Replaced computation of model second moments and ellipticities with analytical estimates.
Improved the accuracy of peak and average model surface brightness estimates.
Fixed some compiler warnings.
Pushed version number to 2.11.7.

Fixed several issues related to image and weight copy prior to fitting.
Fixed bug with symmetric models.
Fixed issue with new FFT planning scheme.
Pushed version number to 2.9.5.

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.

Changed CONCENTRATION_MODEL to SPREAD_MODEL.
Added SPREADERR_MODEL measurement (currently a crude estimate).
Optimized FFT calls.
Set PSF_NMAX to 2 by default.

Removed singular matrix warning.
Added MATRIX_MODELERR measurement parameters.
Added DURATION_ANALYSIS measurement parameter.

Added FLUX_MAX_MODEL, FLUX_EFF_MODEL, FLUX_MEAN_MODEL, MU_MAX_MODEL, MU_EFF_MODEL and MU_MEAN_MODEL parameters (FLUX_MAX_MODEL estimator still somewhat inacurrate).
Added FLUX_MAX_SPHEROID, FLUX_EFF_SPHEROID, FLUX_MEAN_SPHEROID, MU_MAX_SPHEROID, MU_EFF_SPHEROID, MU_MEAN_SPHEROID parameters.
Added FLUX_MAX_DISK, FLUX_EFF_DISK, FLUX_MEAN_DISK, MU_MAX_DISK, MU_EFF_DISK and MU_MEAN_DISK parameters.
Changed the way total model fluxes and model moments are computed.
Pushed version number to 2.9.2.

Changed EPSxMODEL parameters to POLARx_MODEL.
Added AMODEL, BMODEL, THETAMODEL for both _IMAGE and _WORLD coordinates.
Added CXXMODEL CYYMODEL, CXYMODEL for both _IMAGE and _WORLD coordinates.
AddedTHETAMODEL_SKY,THETAMODEL_J2000,THETAMODEL_B1950.
Added ELLIPxMODEL_WORLD and POLARxMODEL_WORLD.
Fixed broken PSF-fitting.
Fixed warnings while generating the configure (thanks to S.Pascual).
Pushed version number to 2.9.1.

Re-organized astrometric calls.

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

Version number pushed to 2.8.4.