Change source and target version to Java 8
Change source and target version to Java 8

vjuranek/radargun,radargun/radargun,vjuranek/radargun,rmacor/radargun,rmacor/radargun,rmacor/radargun,radargun/radargun,radargun/radargun,radargun/radargun,vjuranek/radargun,vjuranek/radargun,rmacor/radargun