Improve wheels workflow configuration

* Include python folder in sdist

* build: Update cibuildwheel version

* Improve wheels workflow configuration

As per https://github.com/pypa/cibuildwheel/blob/main/examples/github-deploy.yml

.github/workflows/wheels.yml

@@ -16,7 +16,7 @@ env:
 
 jobs:
   build_sdist:
-    name: Build SDist
+    name: Build source distribution
     runs-on: ubuntu-latest
 
     steps:
@@ -25,16 +25,13 @@ jobs:
         submodules: true
 
     - uses: actions/setup-python@v2
+      name: Install Python
+      with:
+          python-version: '3.8'
 
-    - name: Install deps
-      run: python -m pip install twine build
-
-    - name: Build SDist
+    - name: Build sdist
       run: python setup.py sdist
 
-    - name: Check metadata
-      run: twine check dist/*
-
     - uses: actions/upload-artifact@v2
       with:
         path: dist/*.tar.gz
@@ -54,12 +51,12 @@ jobs:
         submodules: true
 
     - uses: actions/setup-python@v2
+      name: Install Python
+      with:
+        python-version: '3.8'
 
-    - name: Install cibuildwheel
-      run: python -m pip install cibuildwheel==1.6.3
-
-    - name: Build wheel
-      run: python -m cibuildwheel --output-dir wheelhouse
+    - name: Build wheels
+      uses: pypa/cibuildwheel@v2.0.0
 
     - name: Show files
       run: ls -lh wheelhouse
@@ -89,7 +86,7 @@ jobs:
         name: artifact
         path: dist
 
-    - uses: pypa/gh-action-pypi-publish@v1.4.1
+    - uses: pypa/gh-action-pypi-publish@v1.4.2
       with:
         user: __token__
         password: ${{ secrets.pypi_password }}

MANIFEST.in

@@ -2,3 +2,5 @@ include VERSION COPYING CMakeLists.txt
 graft data
 graft doc
 graft src
+graft python
+