Tweakwcs

===================

- Make code more robust to exceptions in the ``spherical_geometry``
package. [138]

- Fixed a bug in ``matchutils._find_peak()`` due to which it could return
coordinates of the peak that were outside of the image. [136]

- Fixed a bug in how re-projection was computed when ``center`` of the
transformations was provided. [135]

========================

- Added support for detecting and using velocity aberration corrected
``V2-V3`` frames when available in JWST WCS (``'v2v3vacorr'``). [130]

========================

- Added ``linearfit.fit_rshift`` function to support a new ``fitgeom`` fitting
mode ``'rshift'`` that fits only for shifts and a rotation. [128]

=========================

- Added ``ref_tpwcs`` parameter to ``imalign.fit_wcs()``,
``imalign.align_wcs()``, ``wcsimage.WCSGroupCatalog.align_to_ref()`` to allow
alignment to be performed in user-specified distortion-free tangent
plane. [125]

- Renamed ``tanplane_wcs`` parameter in
``wcsimage.WCSGroupCatalog.apply_affine_to_wcs()`` to ``ref_tpwcs``.
``tanplane_wcs`` parameter was deprecated and will be removed in a future
release. [125]

===================

- Bug fix: Unable to initialize ``JWSTgWCS`` tangent-plane corrector from an
already corrected WCS. [122]

- Fix a bug in how corrections are applied to a previously corrected
JWST WCS. [120]

- Do not attempt to extract center of linear transformation when not available
in ``'fit_info'``. [119]

=====================

- Fixed a bug due to which reprojection transformation for JWST gWCS was
computed at wrong location in the tangent plane. [118]