Drizzlepac

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

- Fix a bug that results in ``tweakreg`` crashing when no sources are found
with user-specified source-finding parameters and when ``tweakreg`` then
attempts to find sources using default parameters. [181]

- Updated unit_tests to use original inputs, rather than updated inputs used by
nightly regression tests.

- Fix ``numpy`` "floating" deprecation warnings. [175]

- Fix incorrect units in CR-cleaned images created by ``astrodrizzle``. Now
CR-cleaned images should have the same units as input images. [190]

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

- Changed the color scheme of the ``hist2d`` plots to ``viridis``. [167]

- Refactored test suite

- ``sdist`` now packages C extension source code

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

- Replace ``pyregion`` with ``stregion``

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

- Updated links in the documentation to point to latest
``drizzlepac`` website and online API documentation.

- Code cleanup.

- Updated C code to be more compatible with latest numpy releases in order
to reduce numerous compile warnings.

- Updated documentation to eliminate (at this moment) all sphinx documentation
generation warnings.

- Moved ``'release_notes.rst'`` to ``'CHANGELOG.rst'`` in the top-level
directory.

- Improved setup to allow documentation build. See
`drizzlepac PR 142 <https://github.com/spacetelescope/drizzlepac/pull/142>`_
and `Issue 129 <https://github.com/spacetelescope/drizzlepac/issues/129>`_
for more details.

- Fixed a bug in a print statement in the create median step due to which
background values for input images used in this step were not printed.

- Fixed a bug due to which ``TweakReg`` may have effectively ignored
``verbose`` setting.

- Fixed a bug in ``drizzlepac.util.WithLogging`` due to which ``astrodrizzle``
would throw an error trying when to raise another error.
See `Issue 157 <https://github.com/spacetelescope/drizzlepac/issues/157>`_
for more details.

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

- Fixed a bug in ``TweakReg`` introduced in ``v2.2.0`` due to which, when
``TweakReg`` is run from the interpreter, the code may crash when trying to
interpret input files.

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

- Fixed problems with processing WFPC2 data provided by the archive. User will
need to make sure they run ``updatewcs`` on all input WFPC2 data before
combining them with ``astrodrizzle``.