Activate Github Actions

diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
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+++ b/.github/workflows/maven.yml
@@ -0,0 +1,51 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+name: GitHub CI
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    strategy:
+      matrix:
+        os: [ubuntu-20.04, windows-latest, macOS-latest]
+        java: [7, 8, 11, 16-ea, 17-ea]
+      fail-fast: false
+
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Cache local Maven repository
+        uses: actions/cache@v2
+        with:
+            path: ~/.m2/repository
+            key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
+            restore-keys: |
+                ${{ runner.os }}-maven-
+
+      - name: Set up JDK
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java }}
+
+      - name: Build with Maven
+        run: mvn verify -e -B -V -P run-its