Update matplotlib to 3.4.1

[pyup-bot]

This PR updates matplotlib from 1.4.0 to 3.4.1.

Changelog

3.4.1

This is the first bugfix release of the 3.4.x series.

This release contains several critical bug-fixes:

* fix errorbar when specifying fillstyle
* fix Inkscape cleanup at exit on Windows for tests
* fix legends of colour-mapped scatter plots
* fix positioning of annotation fancy arrows
* fix size and color rendering for 3D scatter plots
* fix suptitle manual positioning when using constrained layout
* respect antialiasing settings in cairo backends as well

3.4.0

Highlights of this release include:

- Figure and Axes creation / management
 - New subfigure functionality
 - Single-line string notation for `subplot_mosaic`
 - Changes to behavior of Axes creation methods (`gca`, `add_axes`, `add_subplot`)
 - `add_subplot`/`add_axes` gained an *axes_class* parameter
 - Subplot and subplot2grid can now work with constrained layout
- Plotting methods
 - `axline` supports transform parameter
 - New automatic labeling for bar charts
 - A list of hatches can be specified to `bar` and `barh`
 - Setting `BarContainer` orientation
 - Contour plots now default to using `ScalarFormatter`
 - `Axes.errorbar` cycles non-color properties correctly
 - `errorbar` *errorevery* parameter matches *markevery*
 - `hexbin` supports data reference for *C* parameter
 - Support callable for formatting of Sankey labels
 - `Axes.spines` access shortcuts
 - New `stairs` method and `StepPatch` artist
 - Added *orientation* parameter for stem plots
 - Angles on Bracket arrow styles
 - `TickedStroke` patheffect
- Colors and colormaps
 - Collection color specification and mapping
 - Transparency (alpha) can be set as an array in collections
 - pcolormesh has improved transparency handling by enabling snapping
 - IPython representations for Colormap objects
 - `Colormap.set_extremes` and `Colormap.with_extremes`
 - Get under/over/bad colors of Colormap objects
 - New `cm.unregister_cmap` function
 - New `CenteredNorm` for symmetrical data around a center
 - New `FuncNorm` for arbitrary normalizations
 - GridSpec-based colorbars can now be positioned above or to the left of the main axes
- Titles, ticks, and labels
 - supxlabel and supylabel
 - Shared-axes `subplots` tick label visibility is now correct for top or left labels
 - An iterable object with labels can be passed to `Axes.plot`
- Fonts and Text
 - Text transform can rotate text direction
 - `matplotlib.mathtext` now supports *overset* and *underset* LaTeX symbols
 - *math_fontfamily* parameter to change `Text` font family
 - `TextArea`/`AnchoredText` support *horizontalalignment*
 - PDF supports URLs on Text artists
- rcParams improvements
 - New rcParams for dates: set converter and whether to use interval_multiples
 - Date formatters now respect *usetex* rcParam
 - Setting *image.cmap* to a Colormap
 - Tick and tick label colors can be set independently using rcParams
- 3D Axes improvements
 - Errorbar method in 3D Axes
 - Stem plots in 3D Axes
 - 3D Collection properties are now modifiable
 - Panning in 3D Axes
- Interactive tool improvements
 - New `RangeSlider` widget
 - Sliders can now snap to arbitrary values
 - Pausing and Resuming Animations
- Sphinx extensions
 - `plot_directive` *caption* option
- Backend-specific improvements
 - Consecutive rasterized draws now merged
 - Support raw/rgba frame format in `FFMpegFileWriter`
 - nbAgg/WebAgg support middle-click and double-click
 - nbAgg support binary communication
 - Indexed color for PNG images in PDF files when possible
 - Improved font subsettings in PDF/PS
 - Kerning added to strings in PDFs
 - Fully-fractional HiDPI in QtAgg
 - wxAgg supports fullscreen toggle

3.4.0rc3

This is the third release candidate for Matplotlib 3.4.0.

3.4.0rc2

This is the second release candidate for Matplotlib 3.4.0.

3.4.0rc1

This is the first release candidate for Matplotlib 3.4.0.

3.3.4

This is the fourth bugfix release of the 3.3.x series.

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.

3.3.3

This is the third bugfix release of the 3.3.x series.

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.

3.3.2

This is the second bugfix release of the 3.3.x series.

This release contains several critical bug-fixes:

* fix `Axis` scale on twinned `Axes`
* fix auto-close of `Figure`s in nbagg
* fix automatic title placement if `Axes` is off the `Figure`
* fix autoranging of log scales with barstacked histogram
* fix extra redraws when using `Button` or `TextBox` widgets
* fix imshow with `LogNorm` and large vmin/vmax ranges
* fix plotting Pandas `DataFrame` with string `MultiIndex`
* fix `scatter` with `marker=''`
* fix `scatter3d` color/linewidth re-projection
* fix state of mode buttons in TkAgg backends
* include license files in built distribution
* reduce Visual C++ runtime requirements on Windows

3.3.1

This is the first bugfix release of the 3.3.x series.

This release contains several critical bug-fixes:

* fix docstring import issues when running Python with optimization
* fix `hist` with categorical data, such as with Pandas
* fix install on BSD systems
* fix nbagg compatibility with Chrome 84+
* fix ordering of scatter marker size in 3D plots
* fix performance regression when plotting `Path`s
* fix reading from URL in `imread`
* fix several regressions with new date epoch handling
* fix some bad constrained and tight layout interactions with colorbars
* fix use of customized toolbars in TkAgg and WXAgg backends

3.3.0

Highlights of this release include:

- Provisional API for composing semantic axes layouts from text or nested lists
- New Axes.sharex, Axes.sharey methods
- Turbo colormap
- colors.BoundaryNorm supports extend keyword argument
- Text color for legend labels
- Pcolor and Pcolormesh now accept shading='nearest' and 'auto'
- Allow tick formatters to be set with str or function inputs
- New Axes.axline method
- Dates use a modern epoch
- Improved font weight detection
- Axes3D no longer distorts the 3D plot to match the 2D aspect ratio
- More consistent toolbar behavior across backends
- Toolbar icons are now styled for dark themes
- Cursor text now uses a number of significant digits matching pointing precision
- Functions to compute a Path's size
- savefig() gained a backend keyword argument
- Saving SVG now supports adding metadata
- Saving PDF metadata via PGF now consistent with PDF backend
- NbAgg and WebAgg no longer use jQuery & jQuery UI

For the full details please see the [What's New](https://matplotlib.org/3.3.0/users/whats_new.html) and [API changes](https://matplotlib.org/3.3.0/api/api_changes.html) in the documentation.

3.2.2

This is the second bugfix release of the 3.2.x series.

This release contains several critical bug-fixes:

- support fractional HiDPI scaling with Qt backends
- support new Python and fix syntax errors in legacy Python
- support new Qt 5 and fix support for Qt 4
- fix animation writer fallback
- fix figure resizing
- fix handling of large arcs
- fix issues with tight layout
- fix saving figures after closing windows or under certain size conditions
- fix scatter when specifying a single color
- fix several memory leaks
- fix unexpected autoscaling behavior
- fix various issues with usetex
- various minor bug and documentation fixes

3.2.1

This is the first bugfix release of the 3.2.x series.

This release contains several critical bug-fixes:

- fix `Quiver.set_UVC` calls with scalar inputs
- fix `bezier.get_parallels` failure from floating point rounding errors
- fix markers specified as tuples (polygons, stars, or asterisks)
- fix saving PNGs to file objects in some places
- fix saving figures using the nbAgg/notebook backend
- fix saving with tight layout using the PGF backend
- fix setting custom datapath in rcParams (note: it is still deprecated)
- fix various issues running setup.py in non-CI environments
- fix xpdf distiller
- various minor bug and documentation fixes

3.2.0rc1

This is the first release candidate from Matplotlib 3.2

3.1.1

The first bug-fix release of the 3.1 series

* Locator.nonsingular return order API change

Lots of backports of various bug fixes.

Links

• PyPI: https://pypi.org/project/matplotlib
• Changelog: https://pyup.io/changelogs/matplotlib/
• Homepage: https://matplotlib.org

[pyup-bot]

Closing this in favor of #699