Merge pull request #306 from qequ/feature-type-hint

feat: Add type hints and mypy support

.github/workflows/black-lint.yml

@@ -0,0 +1,32 @@
+name: Python Linting
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - 'schema.py'
+  pull_request:
+    branches:
+      - master
+    paths:
+      - 'schema.py'
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v2
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.10'
+
+    - name: Install Black
+      run: pip install black
+
+    - name: Run Black on schema.py
+      run: black --check schema.py

.github/workflows/python-test.yml

@@ -0,0 +1,28 @@
+name: Python Test on Pull Requests
+
+on:
+    pull_request:
+        branches:
+          - master
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v2
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.10'
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install pytest
+        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+
+    - name: Run tests
+      run: pytest

README.rst

@@ -1,4 +1,4 @@
-Schema validation just got Pythonic
+Schema validation just got Pythonic 
 ===============================================================================
 
 **schema** is a library for validating Python data structures, such as those