Add backwards date range

[garyi-inmanage]

Is your feature request related to a problem? Please describe.
Currently I haven't seen this functionality in the docs.

Describe the solution you'd like
Like selectsRange a boolean prop or maybe already inside the selectsRange functionality add a range for before.

For example if I choose september 20th and hover september 10th I expect to see the same hover effect and functionality if it was the opposite, choosing september 10th and then september 20th.

Describe alternatives you've considered
None.

Additional context
Add any other context or screenshots about the feature request here.