I re-run the old scripts (dump_plot_demos_1 and dump_plot_demos_2) with
hg id aa0c6708046a and there are quite a few regressions relative to 4.2.1.
(annotations, colorbar placements, copyobj, imshow, many 3-d renderings look bad, pie,
spinmap).
I will start feeding them into bug reports later...
Dmitri.
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