Test static selectors in CI

Author: madsmtm

.github/workflows/ci.yml

@@ -247,3 +247,9 @@ jobs:
         command: test
         # Not using --all-features because that would enable e.g. gnustep
         args: --no-fail-fast --features ${{ env.FEATURES }},${{ env.UNSTABLE_FEATURES }} ${{ matrix.args }} ${{ matrix.test-args }}
+
+    - name: Test static selectors
+      uses: actions-rs/cargo@v1
+      with:
+        command: test
+        args: --no-fail-fast --features static-sel ${{ matrix.args }} ${{ matrix.test-args }}