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If the currently selected item is the first one and the user uses KEY_UP then the selection will move to the last option. Similarly for KEY_DOWN - if the selected option is the last one then using DOWN key will move the selection to the first one.

Form#findSubmittingComponent() doesn't throw exceptions for invisible/disabled submitters  WICKET-5672

The check whether the form submitter is invisible or disabled is moved to Form#onFormSubmitted(). Now the applications can change the visible/enabled state of the submitter in #onSubmit() implementations and later use Form#findSubmittingComponent() in the application code. It is now responsibility of the application to check whether the submitting component is visible/enabled or not and react on this appropriately.

Dependency updates

All libraries on which Wicket modules depend are updated to their latest stable versions.
The most notable ones are:

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