RLS: 1.0.1
A decent number of regressions have been reported on 1.0.0. I think we should target 1.0.1 for sometime early next week. Perhaps on Tuesday, depending on how much progress we make on the regressions.

cc @pandas-dev/pandas-core.

make sure these are [backported](
https://github.com/pandas-dev/pandas/pulls?q=is%3Apr+label%3A%22Still+Needs+Manual+Backport%22)