fix project metadata to fix install issues

Author: jeking3

pyproject.toml

@@ -1,10 +1,10 @@
 [tool.black]
 line-length = 88
-target-version = ["py36"]
+target-version = ["py37"]
 
 [tool.isort]
 profile = "black"
-py_version = "36"
+py_version = "37"
 
 [tool.coverage.run]
 parallel = true

setup.py

@@ -3,10 +3,16 @@
 with open("README.rst") as readme, open("CHANGES.rst") as changes:
     setup(
         name="django-simple-history",
-        use_scm_version={"version_scheme": "post-release"},
+        use_scm_version={
+            "version_scheme": "post-release",
+            "local_scheme": "node-and-date",
+            "relative_to": __file__,
+            "root": ".",
+        },
         setup_requires=["setuptools_scm"],
         description="Store model history and view/revert changes from admin site.",
         long_description="\n".join((readme.read(), changes.read())),
+        long_description_content_type="text/x-rst",
         author="Corey Bertram",
         author_email="[email protected]",
         maintainer="Trey Hunner",