- update to 0.20.0:
* Replace ``pkg_resources`` with ``importlib.metadata``. [#478]
* Serialize and deserialize ``pixel_shape`` with asdf. [#480]
* Synchronize ``array_shape`` and ``pixel_shape`` attributes of
WCS objects. [#439]
* Fix failures and warnings with numpy 2.0. [#472]
* Remove deprecated old ``bounding_box``. The new
implementation is released with
* Refactor ``CoordinateFrame.axis_physical_types``. [#459]
* ``StokesFrame`` uses now ``astropy.coordinates.StokesCoord``.
* Dropped support for Python 3.8. [#451]
* Fixed a call to ``astropy.coordinates`` in
``wcstools.wcs_from_points``. [#448]
* Code and docstrings clean up. [#460]
* Register all available asdf extension manifests from ``asdf-
wcs-schemas``

* Added an option to to_fits_sip() to be able to specify the
* Added support for providing custom range of degrees in
* Fix a formula for estimating crpix in to_fits_sip() so that
* Allow sub-pixel sampling of the WCS model when computing SIP
* Fixed a bug in to_fits_sip due to which inv_degree was
* Added insert_frame method to modify the pipeline of a
* Added to_fits_tab method to generate FITS header and binary
* Added in_image function for testing whether a point in world
coordinates maps back to the domain of definition of the
* Updated versions of schemas for gwcs objects based on
latest versions of transform schemas in asdf-standard.
* Added a wcs.Step class to allow serialization to ASDF to
* WCS.pipeline now is a list of Step instances instead of