FIx up metadata

Author: gordonwatts

setup.py

@@ -47,7 +47,7 @@
     maintainer="Gordon Watts (IRIS-HEP/UW Seattle)",
     maintainer_email="gwatts@uw.edu",
     url="https://github.com/iris-hep/func_adl",
-    license="TBD",
+    license="MIT",
     test_suite="tests",
     install_requires=["make-it-sync"],
     setup_requires=["pytest-runner"],
@@ -56,7 +56,7 @@
     classifiers=[
         # "Development Status :: 3 - Alpha",
         # "Development Status :: 4 - Beta",
-        # "Development Status :: 5 - Production/Stable",
+        "Development Status :: 5 - Production/Stable",
         # "Development Status :: 6 - Mature",
         "Intended Audience :: Developers",
         "Intended Audience :: Information Technology",
@@ -67,7 +67,6 @@
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
-        "Programming Language :: Python :: 3.6",
         "Topic :: Software Development",
         "Topic :: Utilities",
     ],