Update setup.cfg license classifier (#119)

* Change license classifier to Apache

* reset version

* Update setup.cfg

- up to Beta

---------

Co-authored-by: Mackenzie Mathis <mathis@rowland.harvard.edu>

Author: stes

setup.cfg

@@ -12,13 +12,16 @@ url = https://github.com/AdaptiveMotorControlLab/CEBRA
 project_urls =
     Bug Tracker = https://github.com/AdaptiveMotorControlLab/CEBRA/issues
 classifiers =
-    Development Status :: 3 - Alpha
+    Development Status :: 4 - Beta
     Environment :: GPU :: NVIDIA CUDA
     Intended Audience :: Science/Research
     Operating System :: OS Independent
     Programming Language :: Python :: 3
     Topic :: Scientific/Engineering :: Artificial Intelligence
-    License :: Free for non-commercial use
+    # NOTE(stes): Upgrade according to https://github.com/pypa/trove-classifiers/issues/17#issuecomment-385027197
+    # once the new classifiers are published
+    License :: OSI Approved :: Apache Software License
+
 
 [options]
 packages = find: