Updated the required version of libSBOLj from 2.3.1 to 2.4.0 in the pom.xml. Otherwise got class cast exception in the read method of libSBOLj.

Author: Nicholas Roehner

pom.xml

@@ -79,7 +79,7 @@
         <dependency>
         	<groupId>org.sbolstandard</groupId>
         	<artifactId>libSBOLj</artifactId>
-        	<version>2.3.1</version>
+        	<version>2.4.0</version>
         </dependency>
 
     </dependencies>