is_categorical is deprecated in Pandas 1.1, use is_categorical_dtype instead

[gokceneraslan]

Apparently is_categorical is deprecated in pandas 1.1, as you probably already know:

pandas-dev/pandas#33385

Here are the instances I can find:

https://github.com/theislab/anndata/blob/master/anndata/_core/anndata.py#L1094

https://github.com/theislab/anndata/blob/master/anndata/_core/anndata.py#L1192

https://github.com/theislab/anndata/blob/master/anndata/tests/test_readwrite.py#L8

Here is how highly_variable_genes look like, a bit annoying:

[ivirshup]

Good to know! I've been on pandas<1.1 since it breaks our tests. It might be a bit difficult to make a PR for fixing this until pandas 1.1.1 is released (tracking issue: pandas-dev/pandas#35489).