Minor text changes
Renamed .webform_submit classname to .form_submit
Added dynamic classname to identify field blocks
Replaced jQuery attr() with prop() methods where applicable

Fix bug where name attribute is not being applied to <select> elements

Fix bug where required property is not being correctly applied to grouped field elements
Added ability to define custom first option in a select menu

Updated JSON example
Added stop/start methods to workaround AJAX response delays
Packed new version with latest changes
Added QUnit field element test cases