Add some caching

.github/workflows/tests.yml

@@ -29,6 +29,33 @@ jobs:
       uses: actions/setup-python@v2
       with:
         python-version: ${{ matrix.python-version }}
+    - uses: actions/cache@v1
+      with:
+        path: .tox/shared/.m2
+        key: ${{ matrix.plattform }}-${{ matrix.python-version }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ matrix.plattform }}-${{ matrix.python-version }}-maven-
+
+    - uses: actions/cache@v1
+      with:
+        path: .tox/shared/.m2
+        key: ${{ matrix.plattform }}-${{ matrix.python-version }}-maven-${{ hashFiles('**/pom.xml') }}
+        restore-keys: |
+          ${{ matrix.plattform }}-${{ matrix.python-version }}-maven-
+
+    - uses: actions/cache@v2
+      with:
+        path: ~/.cache/pip
+        key: ${{ matrix.plattform }}-${{ matrix.python-version }}-pip-${{ hashFiles('**/*requirements.txt', 'tox.ini', 'setup.py') }}
+        restore-keys: |
+          ${{ matrix.plattform }}-${{ matrix.python-version }}-pip-
+
+    - uses: actions/cache@v2
+      with:
+        path: ~/jython
+        key: ${{ matrix.jython }}-jython
+      if: matrix.jython
+
     - name: Consider Jython
       run: |
         ci/before_install_jython.sh