Dropping wheels as artifacts

azure-pipelines.yml

@@ -86,3 +86,16 @@ jobs:
       python testdata/pymod/import_tl.py
       python testdata/pymod/pya_tests.py
     displayName: 'Test KLayout pymod'
+
+  - task: CopyFiles@2
+    condition: always()
+    inputs:
+      sourceFolder: '$(Build.SourcesDirectory)'
+      targetFolder: '$(Build.ArtifactStagingDirectory)'
+      contents: '**/?(*.whl)'
+
+  - task: PublishBuildArtifacts@1
+    condition: always()
+    inputs:
+      pathtoPublish: '$(Build.ArtifactStagingDirectory)'
+      artifactName: drop