RLS: 1.3.4
Tracking issue for the 1.3.4 release.

Currently scheduled for October 17, 2021. (could release earlier if there are issues with the pandas 1.3.3 py3.10 wheels once Python 3.10.0 final is released xref https://github.com/pandas-dev/pandas/issues/41940#issuecomment-917375309)

https://github.com/pandas-dev/pandas/milestone/90

List of open regressions: https://github.com/pandas-dev/pandas/issues?q=is%3Aopen+is%3Aissue+label%3ARegression

performance regressions between 1.2.5 and 1.3.x https://simonjayhawkins.github.io/fantastic-dollop/#regressions?sort=3&dir=desc&branch=1.3.x (significant ones have now been addressed)

cc @pandas-dev/pandas-core @pandas-dev/pandas-triage 