Opify the edgel package

Author: gselzer

src/main/java/net/imglib2/algorithm/edge/SubpixelEdgelDetection.java

@@ -73,7 +73,8 @@ public class SubpixelEdgelDetection
 	 * <p>
 	 * Note: The input image type must be a signed type! Otherwise gradient
 	 * computation will not work.
-	 * 
+	 *
+	 * @implNote op name='subpixelEdgels', type='org.scijava.function.Functions.Arity3'
 	 * @param input
 	 *            input image
 	 * @param factory