DOC: minor fixes to astropy.nddata's doc

BLD: pin extension-helpers to 1.* following upstream recommendation

Fix whatsnew URL and instructions

Fix #15678

[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/astral-sh/ruff-pre-commit: v0.1.5 → v0.1.6](https://github.com/astral-sh/...

* Add links on mentioned issue and pull request numbers

The `SkyCoord` `separation()` and `separation_3d()` methods can be
removed without loss of funct...

Ensure `BaseCoordinateFrame` separation methods work with `SkyCoord` input

Fix bug setting items in bytes MaskedColumn

Update minimum required version of astropy-iers-data

Refactor `_parse_coordinate_arg()`

Although the function is still long and complicated, it was possible to
shorten it somewhat with...

fix: ruff c408 in coordinates submodule

The `BaseCoordinateFrame` `separation()` and `separation_3d()` methods
can now safely be used wi...

The new test reveals that the `BaseCoordinateFrame` methods
`separation()` and `separation_3d()`...

Add a `CITATION.cff` file

[ci skip]

fix: remaining ruff pie790 violations

BLD: Allow numpy 2.x

Using the Concept DOI improves maintainance as this DOI stays
identical for all versions. A Vers...

Co-authored-by: Adrian Price-Whelan <[email protected]>

Unless we have proper tools, a complete list of software authors is
hard to maintain here, and b...

Update security policy after v6.0 release

to reflect that we only support 6.x now. [ci skip]

Former by ensure string length calculation includes masked values as well;
latter taking into ac...

Backport PR #15648 on branch main (Finalizing changelog for v6.0.0)

Enforce Ruff rule E402 in tests

because the Action is currently broken. [ci skip]

* Replaced OrderedDict with dict in nddata module

E402 checks for module-level imports that are not at the top of the
file, but until now `astropy...

Stop worrying about `matplotlib` default epoch

The default epoch `matplotlib` used for plot dates changed in version
3.3, but older versions ha...

Fix support of custom WCS mapping.

Remove needless `fmt: off` instructions from `utils`

BLD: fix compatibility issue with setuptools 69.0.0

Revert "Remove deprecated Quantity.nansum() method"

Bump actions/github-script from 6 to 7 in /.github/workflows

Remove deprecated Quantity.nansum() method

Bumps [actions/github-script](https://github.com/actions/github-script) from 6 to 7.
- [Release ...

chore: bump repo-review and cleanup a bit

Signed-off-by: Henry Schreiner <[email protected]>

Remove an unneeded item from `pytest` `filterwarnings`

The `mpl_image_compare` mark is properly registered with `pytest` since
1e634ee1c4c417bd8255225f...

* Configure scientific python repo review checks

* Fix repo review issues

* Update based o...

Some unnecessary cosmology parameter tests are removed.

Fix docstrings describing max_cut

DOC: Updated text w.r.t. security reporting

because we have a Security team now.

[ci skip]

to accurately reflect actual CI status on main [ci skip]

Use correct components of posvel for position in _get_body_barycentric_posvel

* Let Panda Series work as redshift inputs

* changelog

---------

Signed-off-by: nstarma...

for more information, see https://pre-commit.ci

Remove obsolete known issues

This reverts commit 1a03364c56f9d74b04ecbff6e447744961d6feb9.

Trying to convert a complex-value...

This reverts commit f869eece998feccf027f51a3a6083129cfee83d0.

The entry is obsolete since 3beb2...

Use __array_wrap__ instead of __array_prepare__

Ensure TimeDelta can be initialized with empty quantity.