Update matplotlib to 3.3.0

[pyup-bot]

This PR updates matplotlib from 1.4.0 to 3.3.0.

Changelog

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.

2.1.0

This is the second minor release in the Matplotlib 2.x series and the first
release with major new features since 1.5.

This release contains approximately 2 years worth of work by 275 contributors
across over 950 pull requests.  Highlights from this release include:

- support for string categorical values
- export of animations to interactive javascript widgets
- major overhaul of polar plots
- reproducible output for ps/eps, pdf, and svg backends
- performance improvements in drawing lines and images
- GUIs show a busy cursor while rendering the plot


along with many other enhancements and 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 #511