...
Things have been refactored into interfaces here. If you previously implemented this directly, extend FormComponent.AbstractVisitor instead, and rename your formComponent() implementation to onFormComponent().
Logging API Change
The Logging API changed from Commons Logging to SLF4J, so you need to update your POM in order to use it:
e.g:
*if you are using commons-logging:
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-jcl</artifactId>
<version>1.1.0</version>
</dependency>
*if you are using log4j
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.1.0</version>
</dependency>