TYPING/DOC: Move custom type to _typing and add whatsnew#35220

Merged

jreback merged 10 commits intopandas-dev:masterfrom

charlesdong1991:followup_29116

Jul 11, 2020

Commits on Dec 3, 2018

remove \n from docstring
charlesdong1991
committed

Commits on Jan 19, 2019

fix conflicts
charlesdong1991
committed

Commits on Jul 30, 2019

Merge remote-tracking branch 'upstream/master'
charlesdong1991
committed

Commits on Apr 6, 2020

Merge remote-tracking branch 'upstream/master'
charlesdong1991
committed

Commits on Jul 10, 2020