adjusted tests - we found bugs. Thank you.

Author: thsc42

pom.xml

@@ -9,8 +9,8 @@
     <version>0.7.0</version>
 
     <properties>
-        <maven.compiler.source>11</maven.compiler.source>
-        <maven.compiler.target>11</maven.compiler.target>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
         <junit.jupiter.version>5.8.1</junit.jupiter.version>
         <junit.platform.version>1.8.1</junit.platform.version>
         <asap.java.version>0.7.0</asap.java.version>