No longer a multi-release jar. All classes are compiled with target jdk 7, only module-info is jdk 9.

overheadhunter · overheadhunter · commit 2b07e672a7b1 · 2018-02-13T16:22:57.000+01:00
diff --git a/pom.xml b/pom.xml
@@ -120,7 +120,6 @@
 				<configuration>
 					<archive>
 						<manifestEntries>
-							<Multi-Release>true</Multi-Release>
 							<Sealed>true</Sealed>
 						</manifestEntries>
 					</archive>
