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RadioGroup and RadioChoice use their generic type for the argument of #onSelectionChanged() now.
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Palette and Wizard use <div>s instead of <table> markup WICKET-5349
Wizard's For these components markup is changed from <table> to nested <div>s. The Wizard's previous "default" CSS styling is no longer supported, Palette offers an optional styling via org.apache.wicket.extensions.markup.html.form.palette.theme.DefaultTheme.
Behavior changes
org.apache.wicket.request.Url#getQueryString WICKET-4664
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