Merge pull request #45 from keizer619/jdk11

Downgrade to jdk 1.8

.github/workflows/build-master.yml

@@ -12,10 +12,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 11
+    - name: Set up JDK 1.8
       uses: actions/setup-java@v1
       with:
-        java-version: 11
+        java-version: 1.8
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Build with Gradle

.github/workflows/publish-release.yml

@@ -10,10 +10,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Set up JDK 11
+      - name: Set up JDK 1.8
         uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 1.8
       - name: Grant execute permission for gradlew
         run: chmod +x gradlew
       - name: Publish artifact

.github/workflows/pull-request.yml

@@ -9,10 +9,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 11
+    - name: Set up JDK 1.8
       uses: actions/setup-java@v1
       with:
-        java-version: 11
+        java-version: 1.8
     - name: Grant execute permission for gradlew
       run: chmod +x gradlew
     - name: Build with Gradle

build.gradle

@@ -59,7 +59,7 @@ task createZip(type:Zip) {
     destinationDir file('build')
 }
 
-sourceCompatibility = 11
+sourceCompatibility = 1.8
 
 dependencies {
     implementation 'info.picocli:picocli:4.0.1'