Only print compiler messages if --verbose flag is given.

ragconnect.base/src/main/java/org/jastadd/ragconnect/compiler/Compiler.java

@@ -138,8 +138,10 @@ public class Compiler extends AbstractCompiler {
   }
 
   private void printMessage(String message) {
+    if (optionVerbose.value()) {
       System.out.println(message);
     }
+  }
 
   private void writeToFile(Path path, String str) throws CompilerException {
     try (BufferedWriter writer = Files.newBufferedWriter(path)) {