POM: bump development version to 0.6.0-SNAPSHOT

There is new API for the main thread queuing feature.

Author: ctrueden

pom.xml

@@ -11,7 +11,7 @@
 
 	<groupId>org.apposed</groupId>
 	<artifactId>appose</artifactId>
-	<version>0.5.2-SNAPSHOT</version>
+	<version>0.6.0-SNAPSHOT</version>
 
 	<name>Appose</name>
 	<description>Appose: multi-language interprocess cooperation with shared memory.</description>