tagging the 0.22 release 

tagging for 0.22rc3 release 

Tagging 0.22rc2.post1, fixed the ReST issue in README 

Taggig the 0.22rc2 release 

Tagging for the 0.22rc1 release 

FIX clip small values in PLS cross-decomposition for increased stabil… …ity (scikit-learn#13903)

Merge branch 'for0.21.3' into 0.21.X 

TST Sets decimal 

DOC Improve OPTICS doc (scikit-learn#13866) 

DOC Fix reference in whats new 0.21 (scikit-learn#13845)