Hixie a8a32a972a Fix crash when removing a card in card_collection
MixedViewport didn't use the building:true flag when locking itself, so
when it caused a rebuild of its children, we assumed that nobody was
allowed to mark things dirty below the list, and things crashed when
Inherited people did in fact rebuild.

Also:
 - default offset for MixedViewport
 - don't bother rebuilding if the underlying RenderObject is going to
   rebuild anyway for some reason
 - better docs for the "items must have keys" assert
 - keep the FlipComponent stuff together in test_widgets.dart
2015-10-28 10:31:12 -07:00
..
2015-10-27 20:15:58 -07:00

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