Hixie 2c69f2429f Clean-up around progress indicators.
Move StepTween to tween.dart.

Move _buildIndicator() methods to be next to the build() methods they're
used from, so that reading the code is easier.

Fix typos, add some comments, style nits.
2016-02-12 09:28:56 -08:00
..
2016-01-20 15:58:05 -08:00
2016-02-11 00:06:23 -08:00
2015-12-11 21:05:26 -08:00