Remove redundant behaviour changes in 3.6

doc/api/prev_api_changes/api_changes_3.6.0/behaviour.rst

@@ -19,19 +19,6 @@ AGG renderer. Previously such a large image would be shown incorrectly. To
 prevent this downsampling and the warning it raises, manually downsample your
 data before handing it to `~matplotlib.axes.Axes.imshow`.
 
-New *algorithm* keyword argument to ``contour`` and ``contourf``
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The contouring functions `~matplotlib.axes.Axes.contour` and
-`~matplotlib.axes.Axes.contourf` have a new keyword argument *algorithm* to
-control which algorithm is used to calculate the contours. There is a choice of
-four algorithms to use, and the default is to use ``algorithm='mpl2014'`` which
-is the same algorithm that Matplotlib has been using since 2014.
-
-Other possible values of the *algorithm* keyword argument are ``'mpl2005'``,
-``'serial'`` and ``'threaded'``; see the `ContourPy documentation
-<https://contourpy.readthedocs.io>`_ for further details.
-
 Default date limits changed to 1970-01-01 – 1970-01-02
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
@@ -64,14 +51,6 @@ Previously `.Axis.get_ticklabels` (and `.Axes.get_xticklabels`,
 already been performed. Now the ticks and their labels are updated when the
 labels are requested.
 
-Added *markerfacecoloralt* parameter to ``Axes.errorbar``
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-
-The *markerfacecoloralt* parameter is now passed to the line plotter from
-`.Axes.errorbar`. The documentation now accurately lists which properties are
-passed to `.Line2D`, rather than claiming that all keyword arguments are passed
-on.
-
 Warning when scatter plot color settings discarded
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 

doc/users/prev_whats_new/whats_new_3.6.0.rst

@@ -234,19 +234,22 @@ only be set globally via :rc:`contour.negative_linestyles`.
     axs[1].clabel(CS, fontsize=9, inline=True)
     axs[1].set_title('Dotted negative contours')
 
-ContourPy used for quad contour calculations
---------------------------------------------
+Imrpoved quad contour calculations via ContourPy
+------------------------------------------------
+
+The contouring functions `~.axes.Axes.contour` and `~.axes.Axes.contourf` have
+a new keyword argument *algorithm* to control which algorithm is used to
+calculate the contours. There is a choice of four algorithms to use, and the
+default is to use ``algorithm='mpl2014'`` which is the same algorithm that
+Matplotlib has been using since 2014.
 
 Previously Matplotlib shipped its own C++ code for calculating the contours of
 quad grids. Now the external library `ContourPy
-<https://github.com/contourpy/contourpy>`_ is used instead. There is a choice
-of four algorithms to use, controlled by the *algorithm* keyword argument to
-the functions `~.axes.Axes.contour` and `~.axes.Axes.contourf`. The default
-behaviour is to use ``algorithm='mpl2014'`` which is the same algorithm that
-Matplotlib has been using since 2014.
+<https://github.com/contourpy/contourpy>`_ is used instead.
 
-See the `ContourPy documentation <https://contourpy.readthedocs.io>`_ for
-further details of the different algorithms.
+Other possible values of the *algorithm* keyword argument at this time are
+``'mpl2005'``, ``'serial'`` and ``'threaded'``; see the `ContourPy
+documentation <https://contourpy.readthedocs.io>`_ for further details.
 
 .. note::