The exact spacing is subject to change. The tag building code has been
refactored to accommodate this.
+ - ``form()`` puts its hidden "_method" field in a '<div style="display:none">'
+ to conform to XHTML syntax. The style prevents the div from being displayed
+ or affecting the layout. A new arg ``hidden_fields`` may be a dict or
+ iterable of additional hidden fields, which will be added to the div.
- Set magic ID attribute in ``hidden`` helper to match behavior of the other
- ``image()`` can now calculate the width and height automatically