Update codecov step in build workflow

Author: joowani

.coveragerc

@@ -0,0 +1,2 @@
+[run]
+source=binarytree

.github/workflows/build.yaml

@@ -41,7 +41,8 @@ jobs:
       - name: Run Sphinx HTML
         run: python -m sphinx -b html -W docs docs/_build
       - name: Upload coverge to Codecov
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v2
         if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.8'
         with:
+          fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}

setup.py

@@ -34,6 +34,8 @@
             "pytest-cov>=2.0.0",
             "sphinx",
             "sphinx_rtd_theme",
+            "types-setuptools",
+            "types-dataclasses",
         ],
     },
     classifiers=[