Add python 3.10 to setup.cfg, too [skip ci]
@@ -20,6 +20,7 @@ classifiers =
Programming Language :: Python :: 3
Programming Language :: Python :: 3.8
Programming Language :: Python :: 3.9
+ Programming Language :: Python :: 3.10
Programming Language :: Python :: Implementation :: CPython
Topic :: Scientific/Engineering :: Astronomy
Development Status :: 3 - Alpha
