1.1.3
move around examples for better structure.
EXA: fix example for matplotlib 3.1 (#23083)
DOC Fix MDS images in user guide (#22465)
MNT handle warnings in plot_manifold_sphere.py (#23124)
MNT Update black to stable version (#22474)
DOC, MNT Typos found by codespell (#22906)
DOC Accelerate plot_t_sne_perplexity.py (#21636)