A typo in setup.py

[ToryDeng]

In setup.py there should be a comma after "anndata>=0.7.5", otherwise pip will ignore the anndata and scikit-learn dependencies.

install_requires = [
    "numpy>=1.19.5",
    "pandas>=1.2.1",
    "scipy >=1.4.1",
    "anndata>=0.7.5"
    "scikit-learn>=0.24.2",
    "matplotlib",
    "seaborn>=0.11.1",
    "statsmodels>=0.12.2"
]

[chromatic]

I addressed this in #7 ; looks like we both caught it about the same time.