ENH: Add description, license, classifiers

Author: effigies

setup.cfg

@@ -5,6 +5,20 @@ subpackage = TODO
 author = TODO
 author_email = TODO
 description = TODO
+long_description = file:README.md
+long_description_content_type = text/markdown; variant=CommonMark
+license = Apache License, 2.0
+classifiers =
+    Development Status :: 2 - Pre-Alpha
+    Environment :: Console
+    Intended Audience :: Science/Research
+    License :: OSI Approved :: Apache Software License
+    Operating System :: MacOS :: MacOS X
+    Operating System :: POSIX :: Linux
+    Programming Language :: Python :: 3.7
+    Programming Language :: Python :: 3.8
+    Programming Language :: Python :: 3.9
+    Topic :: Scientific/Engineering
 
 [options]
 python_requires = >=3.7