update

opentcs-api-base/build.gradle

@@ -8,3 +8,11 @@ apply from: "${rootDir}/gradle/publishing-java.gradle"
 task release {
   dependsOn build
 }
+
+tasks.withType(JavaCompile){
+  options.encoding="utf-8"
+}
+
+tasks.withType(Javadoc){
+  options.encoding="utf-8"
+}