Add codecov upload

.github/workflows/test.yml

@@ -22,12 +22,15 b' jobs:'
         python -m pip install --upgrade -e file://$PWD#egg=ipython[test]
         python -m pip install --upgrade --upgrade-strategy eager trio curio 
         python -m pip install --upgrade pytest pytest-trio 'matplotlib!=3.2.0'
-        python -m pip install --upgrade codecov check-manifest pytest-cov anyio
+        python -m pip install --upgrade check-manifest pytest-cov anyio
     - name: Check manifest
       run: check-manifest
     - name: iptest
       run: |
         cd /tmp && iptest --coverage xml && cd -
+        cp /tmp/ipy_coverage.xml ./
+        cp /tmp/.coverage ./
     - name: pytest
       run: |
         pytest
+    - uses: codecov/codecov-action@v1