run skeleton tests on all builds

Author: JasperVanDenBosch

.github/workflows/testbuild.yml

@@ -66,6 +66,8 @@ jobs:
       if: matrix.os == 'windows-latest'
     - name: Install test dependencies
       run: pip install -r tests/requirements.txt
+    - name: Skeleton tests
+      run: python -m unittest -v rsatoolbox.test
     - name: Unit tests
       run: pytest
     - name: Check package compliance