TODO
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0.0.1 goals
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 + Object class (complete)
 + Widget class (complete)
 + Container class (complete)
 + Event loop (complete)

0.0.2 goals
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 + Flexible theme support (complete)
 + Box widget (complete)
 + Button widget (complete)
 + Text widget (complete)
 + Spinner widget (complete)
 + Seeker/scrollbar widgets (complete)
 + Scrollarea widget (complete)

0.0.3 goals
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 + Entry widget (complete)
 + Embed widgets in pre-existing evas (complete)
 + Notebook widget (complete)

0.0.4 goals:
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 + Tree widget (in progress)
 + Menu widgets (in progress)
 + Table widget (unknown)

0.0.5 goals:
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 + Fully functional textarea
