Backward compatibility issues with previous versions
Since 2.1.0: All default result names and interceptor names are now in camelCase (eg. was redirect-action, is now redirectAction)
Since 2.1.0: The "ajax" theme is provided by the Dojo Plugin. Applications using the ajax theme must include the Dojo Plugin dependency and modify existing pages to import the plugin's own taglib/model
Since 2.1.0 Tiles plugin: A DOCTYPE is now mandatory in the Tiles definitions XML
The immutable Configuration object is now created via a builder. The API is not compatible with prior versions. This primarily affects plugins that define Configuration.
The static method ActionContext.getContext() no longer lazily initializes an ActionContext. Unit tests that relied upon this behaviour need to setup the ActionContext via the Container first.
OGNL method calls like "text(key)" now invoke "text(String)" instead of "getText(String)". This affects method calls only, not properties. Some OGNL expressions may need to be updated.
Since 2.1.1 the REST plugin does not depend on the Codebehind plugin. Maven users using REST with Codebehind have to add a dependency to Codebehind.