reorderables2 0.4.0-nullsafety.0

Null-safe temporary fork for reorderable table, row, column, wrap, sliver list that allow drag and drop of their children.

[0.3.2] - 10 March 2020.

• Fix health suggestions.

[0.3.1] - 10 March 2020.

• Supports making individual child non-reorderable. See ReorderableColumn example 1.

[0.3.0] - 10 Jan 2020.

• Fix: Bad type in onLeave

[0.2.12] - 22 June 2019.

• Removed dependency of FlutterErrorDetails and other ErrorXXX classes.
• Bugfix: needsLongPressDraggable had no default value.

[0.2.11+1] - 11 June 2019.

• Flutter version dependency in pubspec

[0.2.11] - 11 June 2019.

• ReorderableRow and ReorderableColumn: Set needsLongPressDraggable to false to use Draggable. Provide scrollController if use of external scroller controller is preferred.
• Added onReorderStarted callback in ReorderableWrap
• updated README

[0.2.10] - 10 June 2019.

• Bugfix: DiagnosticsNode instead of String for newer version of Flutter

[0.2.9] - 16 May 2019.

• Allows use of CupertinoApp

[0.2.8] - 16 May 2019.

• Added onNoReorder callback

[0.2.7] - 11 May 2019.

• Sliver's cross axis alignment defaults to start
• Remove the use of global keys in reorderable sliver to allow nested sliver

[0.2.6] - 6 May 2019.

• Bugfix: "width is null"

[0.2.5] - 3 May 2019.

• Bugfix: ReorderableWrap supports nested wraps.
• Improvement: children of ReorderableWrap don't have to have a key anymore.
• Included nested ReorderableWrap example

[0.2.1] - 28 April 2019.

• Bugfix: couldn't add/remove elements in ReorderableWrap.
• Bugfix: added elements weren't draggable in ReorderableSliverList.
• Merged pull request: flag to choose between long press draggable and the short one.

[0.2.0] - 5 March 2019.

• Added ReorderableSliverList, ReorderableSliverChildBuilderDelegate, and ReorderableSliverChildListDelegate.
• Bugfix: ReorderableFlex's animation.

[0.1.6] - 1 March 2019.

• Updated API references and README.
• Bugfix: made ReorderableTable's onReorder required.
• Bugfix: corrected scrollDirection in ReorderableRow.

[0.1.5] - 26 February 2019.

• Updated API references.

[0.1.4] - 25 February 2019.

• Alignment bugfix.
• Added column examples.