Bump to next development cycle

Signed-off-by: tpietzsch <tobias.pietzsch@gmail.com>

Author: tpietzsch

pom.xml

@@ -11,7 +11,7 @@
 
 	<groupId>net.imglib2</groupId>
 	<artifactId>imglib2-algorithm</artifactId>
-	<version>0.15.3-SNAPSHOT</version>
+	<version>0.15.4-SNAPSHOT</version>
 
 	<name>ImgLib2 Algorithms</name>
 	<description>Useful image processing algorithms.</description>