Update version number for Publish-Subscribe

Author: iluwatar

publish-subscribe/pom.xml

@@ -4,7 +4,7 @@
 	<parent>
 		<groupId>com.iluwatar</groupId>
 		<artifactId>java-design-patterns</artifactId>
-		<version>1.7.0</version>
+		<version>1.8.0-SNAPSHOT</version>
 	</parent>
 	<artifactId>publish-subscribe</artifactId>
 	<dependencies>