[#521] Update version information and copyright year.

Author: prmr

src/org/jetuml/JetUML.java

@@ -53,7 +53,7 @@
 public final class JetUML extends Application
 {
 	@SuppressWarnings("exports")
-	public static final Version VERSION = Version.create(3, 6);
+	public static final Version VERSION = Version.create(3, 7);
 
 	private static HostServices aHostServices; // Required to open a browser page.
 

src/org/jetuml/JetUML.properties

@@ -3,7 +3,7 @@ application.name=JetUML
 application.icon=jet.png
 application.file.name=JetUML Files
 application.file.all=All Files
-application.copyright=Copyright \u00A9 2015-2023 McGill University
+application.copyright=Copyright \u00A9 2015-2024 McGill University
 quotes.copyright=The quotes in the tooltip information are excerpts\n\
                  from the Unified Modeling Language Reference Manual,\n\
                  Second Edition. Copyright \u00A9 2005 by Pearson Education, Inc.