Separate plots in examples w/ multiple plots using ###### #8922
Description
Sphinx-gallery will render plots in sections if they are separated by a ######### line. This makes it easier to read / follow examples that create multiple plots, putting them inline w/ the code instead of all placed at the top. Some examples don't have this line of ##### put in there yet, so an easy first step is to insert it into any examples where it makes sense.
these are examples with multiple calls to plt.figure or plt.show (that aren't already separated by #####...):
- examples/animation/basic_example.py
- examples/animation/basic_example_writer_sgskip.py
- examples/api/sankey_basics.py
- examples/axes_grid1/demo_fixed_size_axes.py
- examples/axes_grid1/make_room_for_ylabel_using_axesgrid.py
- examples/images_contours_and_fields/contour_demo.py
- examples/images_contours_and_fields/contour_label_demo.py
- examples/images_contours_and_fields/contourf_hatching.py
- examples/images_contours_and_fields/quiver_demo.py
- examples/images_contours_and_fields/tricontour_demo.py
- examples/images_contours_and_fields/tripcolor_demo.py
- examples/images_contours_and_fields/triplot_demo.py
- examples/misc/contour_manual.py
- examples/pylab_examples/demo_tight_layout.py
- examples/pylab_examples/errorbar_limits.py
- examples/pylab_examples/geo_demo.py
- pylab_examples/hyperlinks_sgskip.py
- examples/pylab_examples/markevery_demo.py
- examples/pylab_examples/multipage_pdf.py
- examples/pylab_examples/multiple_figs_demo.py
- examples/pylab_examples/spine_placement_demo.py
- pylab_examples/zorder_demo.py
- examples/pyplots/fig_axes_customize_simple.py
- examples/showcase/xkcd.py
- examples/statistics/boxplot.py
- examples/statistics/bxp.py
- examples/units/ellipse_with_units.py