Add ability to override default MEMORY_FS_ROOT with env var, add pandas@2.0 to tested versions and fix DataFrame groupby

Merge pull request #236 from nalepae/v1.6.5

Bump version `v1.6.5`

Some bug fixes

v1.6.4

Bump version `v1.6.4`

Fix #191

v1.6.3

`README.md`: Add maintainers

Fix #74

v1.6.2

Set version to `1.6.2`

Fix rolling_groupby and expanding_groupby for pandas 1.3.0

v1.6.1

Set version to `1.6.1`

Enable Windows support and by default set the number of workers equals to the number of physical cores

v1.6.0

Documentation: Remove `:`

Fix issue #174: Not able to turn off progress bars

v1.5.8

Set version `1.5.8`

Enable Widget progress bars in Google Colab

v1.5.7

Set version to `1.5.7`

Enable Python 3.10, deactivate inliner and massive refactor

v1.5.6

Massive refactor

Enable Pandas >= 1.4.0

Thanks a lot @cschan1828!