REL: 3.1.2

 - fix regresion of incorrect limits for y-axis in imshow
 - fix integer indexed pandas series
 - fix ScalarFormatter formatting of masked values
 - webagg and nbagg no longer incorrectly fallback to agg when $DISPLAY is not set
 - several fixes for Qt5 backend
 - other bugfixes and documentation fixes

REL: v3.2.0rc2

This is the second release candidate from Matplotlib 3.2

REL: v3.2.0rc1

This is the first release candidate from Matplotlib 3.2

REL: v3.1.1

The first bug-fix release of the 3.1 series

  * Locator.nonsingular return order API change

Lots of backports of various bug fixes.

REL: v3.1.0

The first release of the v3.1 series

This version of Matplotlib support Python 3.6+

Highlights of this release include:

 - A helper method for scatter legends
 - Secondary axis support (ex, degrees and radians)
 - A concise date formatter
 - No longer requires a framework build of Python to use OSX backend
 - Major and minor ticks will no longer collide by default
 - A progress callback for animations
 - mplot3D is always registered
 - deprecated mlab functions have been removed
 - Many function calls have become stricter about invalid or ignored input

REL: v3.1.0rc2

This is the second release candidate from Matplotlib 3.1

REL: v3.1.0rc1

This is the first release candidate from Matplotlib 3.1

REL: v3.0.3

The third and last planned bug-fix release of the 3.0 series

* fix several possible memory leaks
* documentation fixes

jquery-ui is no longer bundled in git repo and is downloaded during
the install or sdist process. If you are installing from pypi the
files will be included, but if you are installing from git you will
need internet access the first time you run `pip install .`. The
install process tries to cache the files and will not need internet
access on future installations.

REL: v2.2.4 LTS

The forth bug-fix release of the v2.2 LTS series.

 - Fix a memory leak with PySide2.
 - rename :math: sphinx directive to :mathmpl: to work with sphinx >
   1.8. Both versions are now available if sphinx < 1.8.
 - avoids numpy deprecation warnings.
 - fixes to tests to work with pytest >= 3.8 and the minimum is now
   pytest >= 3.6.

jquery-ui is no longer bundled in git repo and is downloaded during
the install or sdist process. If you are installing from pypi the
files will be included, but if you are installing from git you will
need internet access the first time you run pip install .. The
install process tries to cache the files and will not need internet
access on future installations.

REL: v3.0.2

This is the second bug-fix release for the v3.0 series.

 - Un-breaks basemap which was broken by partially restoring
   private APIs for cartopy.
 - Fixes bug in warning code when used in an embedded context.
 - Fixes crash when using Tk and closing the first open window before showing it
 - Many documentation improvements.
 - Restore a corner case on ColorBar tick usage.
 - Change the default behavior of `matplotlib.use` to silently allow
   more 'safe' switching after auto-discovery, but before starting an event loop.
 - Improvements to bounding box calculations.
 - Provide the correct length for RcParams instances.