Java Statement Fluent Model

Update Copyright

Conflicts:
	api/src/main/java/org/jboss/forge/roaster/model/source/MethodSource.java
	impl/src/main/java/org/jboss/forge/roaster/model/impl/AnnotationImpl.java
	impl/src/main/java/org/jboss/forge/roaster/model/impl/MethodImpl.java
make materialize returning the created ast node