# 3.0.0
* Migrated to work with Dart SDK 2.12.x NNBD

# 2.0.2
* Fix bug in `toContentRange` that printed invalid indices.
* Fold header items by default.

# 2.0.1
* Adjust `RangeHeaderTransformer` to properly print the content range of each item,
when multiple are present.

# 2.0.0
* Dart 2 update.
* Add `RangeHeaderTransformer`.
* Overall restructuring/refactoring.