Fully removes support for python3.6

setup.py

@@ -55,15 +55,15 @@ def load_requirements():
         "Natural Language :: English",
         "License :: OSI Approved :: BSD License",
         "Programming Language :: Python :: 3",
-        "Programming Language :: Python :: 3.6",
         "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
     ],
     # Note that this feature requires pep8 >= v9 and a version of setup tools greater than the
     # default version installed with virtualenv. Make sure to update your tools!
-    python_requires=">=3.6, <4",
+    python_requires=">=3.7, <4",
     # adding this to slim the package down, since these dependencies are only used in certain contexts.
     extras_require={
         "visualization": ["graphviz", "networkx"],