try github actions

.github/workflows/ci-build-unstable.yml

@@ -0,0 +1,29 @@
+name: Build unstable
+
+on: [push]
+
+concurrency: 
+  group: gradle
+  cancel-in-progress: true
+
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up JDK 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: 1.11
+    - name: Build with Gradle
+      run: ./gradlew clean assemble --info --stacktrace --no-daemon
+
+    - name: Test with Gradle Jacoco and Coveralls
+      run: ./gradlew test jacocoTestReport coveralls --no-daemon
+
+#    - name: Coveralls GitHub Action
+#      uses: coverallsapp/github-action@v1.0.1
+#      with:
+#        github-token: ${{ secrets.GITHUB_TOKEN }}