iterates over the children fields of the field upon which it is called (``for item in field`` == ``for item in field.children``).
$ hg diff -r 2d51adca838f > 1.patch $ cd /path/to/deform/trunk $ patch -p1 < /wherever/1.patch - The ``deform.widget.Widget`` class now accepts an extra keyword argument in its constructor: ``css_class``. All widgets now inherit a ``css_class`` attribute from the base ``deform.widget.Widget`` class. If `css_class`` contains a value, the primary element in the rendered widget will get a CSS ``class`` attribute equal to the value. Also add a CONTRIBUTORS.txt and fix a couple minor documentation bugs and remove a missing import.
``colander.null`` rather than the empty string so that it may be used to represent non-text fields such as ``colander.Integer``. This is isomorphic to the change done previously to ``deform.TextInputWidget`` to support nontextual empty fields.
…matches new colander behavior)