Add KeyedList question type along with render, configuration, and tests. #165
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New question type that derives from List but allows choice selection via alpha-numeric keypress. By default, keys are generated using the first letter or number of the provided label. Multiple keys can be cycled through by repeated key presses.
KeyedList
supports anauto_confirm
keyword argument (defaults to False) that allows an entry to be selected just by the its corresponding key. It's theme is derived fromList
and unit tests are also taken directly from List along with new tests to confirm all selection behaviors and most variations.Open design decisions: Adding surround or leading characters to the key in label and possibly adding theming to call out the available key press. Otherwise, KeyedList should be able to serve as a drop in replacement for List without any change to the underlying functionality including instantiation.