Repository: gyorilab/pybiopax (language: python)

Issue:
Provide type information
Currently, pybiopax package doesn't provide type hints while some functions is annotated for its args and rets.

To provide type information, please follow PEP561:

https://peps.python.org/pep-0561/#packaging-type-information

<img width="536" alt="_" src="https://user-images.githubusercontent.com/42153744/217146789-16f35b54-9fe4-458d-8ba9-60ba50234ede.png">



Discussion / hints:

Fix patch:
diff --git a/MANIFEST.in b/MANIFEST.in
index 97c8bc9..599d43d 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -3,3 +3,4 @@ include README.md
 graft doc
 include pybiopax/tests/phosphorylation_test.owl
 include pybiopax/tests/biopax_test.owl.gz
+include pybiopax/py.typed
diff --git a/pybiopax/py.typed b/pybiopax/py.typed
new file mode 100644
index 0000000..e69de29


Test patch:
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 7bdb46c..464ce9a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [ 3.6, 3.9 ]
+        python-version: [ "3.7", "3.10" ]
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python ${{ matrix.python-version }}