assure the upload will work

Author: Richardk2n

.github/workflows/python-package.yml

@@ -10,7 +10,7 @@ on:
     branches: [ master ]
 
 jobs:
-  build:
+  testCode:
 
     runs-on: ubuntu-latest
     strategy:
@@ -41,3 +41,22 @@ jobs:
     - name: Test with pytest
       run: |
         pytest
+
+  testUploadability:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install setuptools wheel twine
+    - name: Build and check
+      run: |
+        python setup.py sdist bdist_wheel
+        twine check dist/*

setup.py

@@ -3,4 +3,4 @@
 from mypy_ls import _version
 
 if __name__ == "__main__":
-    setup(version=_version.__version__)
+    setup(version=_version.__version__, long_description_content_type="text/x-rst")