- support null-safety
- fix closeToTrailing issue. extended_list#6
- fix viewport wrong index for SliverGrid. ExtendedList#4
- breaking change: fix typo(fullCrossAxisExtend => fullCrossAxisExtent)
- fix analysis_options.yaml
- fix issue about wrong viewport indexes.
- format code.
- add closeToTrailing property for ExtendedListDelegate.
- first release.