Update to libSBOLj 2.4.0

Author: cjmyers

pom.xml

@@ -10,7 +10,7 @@
 		<dependency>
 			<groupId>org.sbolstandard</groupId>
 			<artifactId>libSBOLj</artifactId>
-			<version>2.3.2-SNAPSHOT</version>
+			<version>2.4.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.commons</groupId>