v2.2.3
DOC: Gitpod documentation (#49642)
DOC Change slack invitation from email to link (#52014)
DOC: Added missing git instruction to docs on how to update environment (#54841)
REF: collect to_string tests (#55751)
Change Naming Scheme of Series (#53312)
DOC: change code block for black (#54146)
DOC: Add clarifications to docs for setting up a development environment (#56201)
Contributor Docs: update gitpod docs and small fix (#54292)
DOC: Add user guide section about copy on write (#51454)
[pre-commit.ci] pre-commit autoupdate (#55846)
ENH: allow JSON (de)serialization of ExtensionDtypes (#44722)
DOC: Remove roadmap.rst in favor of the website roadmap (#54283)
DEPR: subclassing Index (#52186)
DOC: Update release instructions (#56232)
DOC: Add security policy (#54060)