Merge remote-tracking branch 'origin/master' into dev

.github/workflows/gradle.yml

@@ -0,0 +1,17 @@
+name: Java CI
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: Set up JDK 11
+      uses: actions/setup-java@v1
+      with:
+        java-version: 11
+    - name: Build with Gradle
+      run: ./gradlew build

README.md

@@ -1,5 +1,5 @@
 
-
+[![DOI](https://zenodo.org/badge/148831678.svg)](https://zenodo.org/badge/latestdoi/148831678)
 
 # Questions and Answers #