Add py.typed marker to indicate package as typed

Author: Photonios

psqlextra/_version.py

@@ -1 +1 @@
-__version__ = "2.0.9rc3+swen.4"
+__version__ = "2.0.9rc4"

psqlextra/py.typed

@@ -40,6 +40,7 @@ def run(self):
     name="django-postgres-extra",
     version=__version__,
     packages=find_packages(exclude=["tests"]),
+    package_data={"psqlextra": ["py.typed"]},
     include_package_data=True,
     license="MIT License",
     description="Bringing all of PostgreSQL's awesomeness to Django.",