Added WM_NAME as _NET_WM_NAME fallback (older apps)

Separated Props and Structs as submodules
Improved performance while maintaining multi-display, multi-screen and multi-root support
Added typing_extensions dependency at runtime

.github/workflows/type-checking.yml

@@ -24,6 +24,6 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
           cache: "pip"
-          cache-dependency-path: "docs/requirements.txt"
+          cache-dependency-path: "requirements.txt"
       - run: pip install -r "requirements.txt"
       - run: mypy . --python-version=${{ matrix.python-version }}