Issue #2242787 by quicksketch: Compatibility with jQuery 1.9+ (use of $.browser and $.fn.attr).
Issue #2242787: Compatibility with jQuery 1.9+ (use of $.browser).
Issue #2205823 by tstoeckler: Options element corrupts integer keys of allowed values for list fields.
Issue #1057294 by kalabro: Provide support for Field Select Lists, Radios, and Checkboxes.
Issue #1422930: Add ability to deselect default value for selects/radio buttons.
Issue #2114503: Switching use of #attributes to the array for D6 compatibility.
Issue #2114503 by Liam Morland: Duplicate key error message displays wrong.
Issue #1978820: #required is not respected.
Issue #1796802 by Liam Morland: Option with value '0' is not saved.
Merge branch '7.x-1.x' of git.drupal.org:project/options_element into 7.x-1.x
Issue #1865626 by rtrubshaw: Default to "no limit" for maximum number of options.
Removing trailing whitespace.
Follow-up #1966852: Fixed CSS not adjusted to account for fieldset changed to container element.
Issue #1980824: Support user and form-provided attributes being output in the wrapping container.
Issue #1966852: Changed options manual entry to be wrapped with a container element instead of fieldset for less jarring output.
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