added remaining abi3 stuff

Author: andreped

.github/workflows/CI-macos.yaml

@@ -25,9 +25,9 @@ jobs:
         pip install -r requirements.txt
 
     - name: Build wheel
-      run: python setup.py bdist_wheel
+      run: python setup.py bdist_wheel --py-limited-api=cp36
 
-    - name: Install program for ${{matrix.TARGET}}
+    - name: Install software
       run: pip install --find-links=${{github.workspace}}/dist/ SimpleCRF
 
     - name: Test import

.github/workflows/CI-ubuntu.yaml

@@ -25,9 +25,9 @@ jobs:
         pip install -r requirements.txt
 
     - name: Build wheel
-      run: python setup.py bdist_wheel
+      run: python setup.py bdist_wheel --py-limited-api=cp36
 
-    - name: Install program for ${{matrix.TARGET}}
+    - name: Install software
       run: pip install --find-links=${{github.workspace}}/dist/ SimpleCRF
 
     - name: Test import

.github/workflows/CI-windows.yaml

@@ -25,9 +25,9 @@ jobs:
         pip install -r requirements.txt
 
     - name: Build wheel
-      run: python setup.py bdist_wheel
+      run: python setup.py bdist_wheel --py-limited-api=cp36
 
-    - name: Install program for ${{matrix.TARGET}}
+    - name: Install software
       run: pip install --find-links=${{github.workspace}}/dist/ SimpleCRF
 
     - name: Test import

setup.cfg

@@ -0,0 +1,2 @@
+[bdist_wheel]
+py_limited_api = cp36

setup.py

@@ -95,9 +95,7 @@ def finalize_options(self):
       ext_modules = [module1, module2, module3],
       classifiers=[
             'License :: OSI Approved :: BSD License',
-            'Programming Language :: Python',
-            'Programming Language :: Python :: 2',
-            'Programming Language :: Python :: 3',
+            'Programming Language :: Python :: 3 :: Only',
       ],
       python_requires = '>=3.6',
       cmdclass={'build_ext': build_ext},)