POM: add myself as a co-developer

I am taking (at least partial) responsibility for this component, since
it is going to play an increasingly important role in the community.

Author: ctrueden

pom.xml

@@ -40,15 +40,21 @@
 				<role>support</role>
 				<role>maintainer</role>
 			</roles>
-			<timezone>-5</timezone>
 		</developer>
-	</developers>
-	<contributors>
-		<contributor>
+		<developer>
+			<id>ctrueden</id>
 			<name>Curtis Rueden</name>
 			<url>http://imagej.net/User:Rueden</url>
-			<properties><id>ctrueden</id></properties>
-		</contributor>
+			<roles>
+				<role>developer</role>
+				<role>debugger</role>
+				<role>reviewer</role>
+				<role>support</role>
+				<role>maintainer</role>
+			</roles>
+		</developer>
+	</developers>
+	<contributors>
 		<contributor>
 			<name>Stefan Helfrich</name>
 			<url>http://imagej.net/User:Stelfrich</url>