Upgraded to python 3.9 and getting warnings

[jamhot1]

Getting the below warning now that I have upgraded to 3.9. Unsure if this is related to Pandas/numpy or the library.

Any of the smart cookies among us recognise what this means?

python3.9/site-packages/backtesting/backtesting.py:1042: FutureWarning: Index.is_all_dates is deprecated, will be removed in a future version. check index.inferred_type instead
if (not data.index.is_all_dates

The Algo still runs fine but have a feeling things may break soon.

[kernc]

Fixed already in c2c3343, will be in next release.

This, as an issue/todo item, would belong on the issue tracker.