Sympy-plot-backends

What's Changed

* Fixed bug with ``PlaneSeries``'s data generation. Thanks to [Crillebon](https://github.com/Chrillebon) for the fix!

What's Changed

* Refinements and bug correction on ``plot_polar``: now it supports both cartesian and polar axis. Set ``polar_axis=True`` to enable polar axis.

* Added polar axis support to ``plot_contour`` with ``MatplotlibBackend``.

* 3D complex plots uses an auto aspect ratio by default.

What's Changed

* ``MatplotlibBackend``:

* improved ``aspect`` ratio logic. It is now possible to use the new values for 3D plots for Matplotlib>=3.6.0, like `"equals"`.

* exposed the ``ax`` attribute to easily retrieve the plot axis.

* Added ``camera`` keyword arguments to backends in order to set the 3D view position. Refer to each backend documentation to get more information about its usage.

* improved documentation.

What's Changed

* Fixed bug with ``plot_geometry`` and 3D geometric entities.

* Added tutorial about combining plots together.

What's Changed

* Added ``plot3d_list`` function to plot list of coordinates on 3D space.

* Changed value to default setting: ``cfg["matplotlib"]["show_minor_grid"]=False``. Set it to ``True`` in order to visualize minor grid lines.

* Improved documentation.

* Enabled ``color_func`` keyword argument on ``plot_vector``.

* ``PlotlyBackend``:

* if the number of points of a 2D line is greater than some threshold, the backend will switch to ``go.Scattergl``. This improves performance.

* Fixed bug with interactive widget contour plot and update of colorbar.

* ``MatplotlibBackend`` can now combine 3d plots with contour plots.

* Fixed bug with addition of interactive plots.

What's Changed

* Improvements to documentation. In particular, ReadTheDocs now shows pictures generated with ``PlotlyBackend``, ``K3DBackend`` as well as interactive plots with widgets.

* Default settings:

* Changed ``cgf["interactive"]["theme"]`` to ``"light"``: interactive plots served on a new browser window will use a light theme.

* Changed ``cgf["bokeh"]["update_event"]`` to ``False``: Bokeh won't update the plot with new data as dragging or zooming operations are performed.

* Added new option ``cgf["k3d"]["camera_mode"]``.


* Improvements to ``MatplotlibBackend``:

* Added label capability to ``plot_implicit``.

* ``show()`` method now accepts keyword arguments. This is useful to detach the plot from a non-interactive console.

* Added ``dots`` keyword argument to ``plot_piecewise`` to choose whether to show circular markers on endpoints.

* Fixed bug with plotting 3D vectors.