Doc: Customized CSS to have equation permalinks visible when hovering the mouse.

Doc: removed non-compliant characters in citation labels that would create problems with Sphinx v1.6+ (see https://github.com/sphinx-doc/sphinx/issues/3917).

Weighting documentation section

Adding .gitignore

Fixed tests.

Fixed sincosf() warning.

Replaced doc PDF with (very preliminary) Sphinx source.
Pushed version number to 2.24.

Restricted model rasters to 512 pixels.
Updated MKL autoconf M4 file.
Updated WCS library.
Pushed version number to 2.23.2.
Fixed dependency issue between PSFs and	some magnitude measurements (thanks to R.Gavazzi).

Fixed issue with magnitudes when used as PSF model parameters (thanks to A.Donnarumma for reporting this issue).
Added ID_PARENT catalog parameter to identify the common parent of deblended sources (thanks to R.McMahon for the suggestion).
Introduced regularization of Sersic model ellipticities based on AMALGAm prescriptions for the Great3 challenge (see Mandelbaum et al. 2015).
Fixed error in ecliptic coordinate computations (thanks to H.Bouy for reporting this issue).
Added support for differential geometry maps, with new DGEO_TYPE and DGEO_IMAGE configuration keywords and new DGEOX/Y_IMAGE and DGEOX/YWIN_IMAGE measurement parameters.
Added differential geometry map correction to model-fitting.
Added VIGNET_DGEOX and VIGNET_DGEOY differential geometry map cutouts in catalogs (for use in PSFEx).
Added support for PSF model dependencies in ASSOC vectors.
Fixed issue with single-line background meshes.
Fixed positional offsets of large galaxy models on MODELS and -MODELS check-images.
Pushed version number to 2.23.1.

Pushed version number to 2.19.5.

ges.
Pushed version number to 2.19.4.

Fixed issue with model fitting measurement leftovers with masked sources (thank
s to E. Rykoff).
Pushed version number to 2.19.3.

Pushed version number to 2.19.1.