[ANN] Matplotlib 3.3.4

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[ANN] Matplotlib 3.3.4

Elliott Sales de Andrade
Hi all,

We are pleased to announce the release of 3.3.4. This is the fourth bug fix release of the 3.3.x series.

Pre-built wheels are available for most major platforms, and can be
installed using `pip install matplotlib==3.3.4`. Other packages may also
be available already; please check with your preferred source.

The 3.3.4 release represents the work of 7 authors over 20 pull
requests, and we thank them for their contributions.

This release contains several critical bug-fixes:

  * Fix WebAgg initialization.
  * Fix parsing |QT_API| setting with mixed case.
  * Fix build with link-time optimization disabled in environment.
  * Fix test compatibility with NumPy 1.20.
  * Fix test compatibility with pytest 6.2.

For further details, please see the What's new in Matplotlib 3.3.4 page:
https://matplotlib.org/3.3.4/users/whats_new.html
and the milestone on GitHub:
https://github.com/matplotlib/matplotlib/milestone/60?closed=1

The 3.3.3 release was not previously announced. Release details are provided below.

The 3.3.3 release represents the work of 11 authors over 46 pull
requests.

This release contains several critical bug-fixes:

  * Fix calls to |Axis.grid| with argument |visible=True|.
  * Fix fully masked |imshow|.
  * Fix inconsistent color mapping in scatter for 3D plots.
  * Fix notebook/nbAgg figures when used with ipywidgets in the same cell.
  * Fix notebook/nbAgg/WebAgg on older (e.g., Firefox ESR) browsers.
  * Fix pcolormesh with |datetime| coordinates.
  * Fix performance regression with |datetime|s.
  * Fix singular ticks with small log ranges.
  * Fix timers/animations on wx and notebook backends.
  * Remove certifi as a hard runtime dependency.

For further details, please see the What's new in Matplotlib 3.3.3 page:
https://matplotlib.org/3.3.3/users/whats_new.html
and the milestone on GitHub:
https://github.com/matplotlib/matplotlib/milestone/58?closed=1

These releases are signed by my GPG key. The fingerprint is:
23CA B59E 3332 F94D 26BE F037 8D86 E7FA E5EB 0C10


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