Prepare next development iteration.

[#496]

Signed-off-by: Mark Paluch <mpaluch@vmware.com>

pom.xml

@@ -24,7 +24,7 @@
 
     <groupId>io.r2dbc</groupId>
     <artifactId>r2dbc-postgresql</artifactId>
-    <version>0.8.12.RELEASE</version>
+    <version>0.8.13.BUILD-SNAPSHOT</version>
     <packaging>jar</packaging>
 
     <name>Reactive Relational Database Connectivity - Postgresql</name>