v0.17.0

New features:

• Automatic key generation for cells without keys defined in the build method of CellWidget and
  CellWidget.builder.

  This allows cells local to a CellWidget to be defined directly in the build method/function
  without having to use .cell(() => ...)

  With version 0.4.0:

  class Example extends CellWidget with CellInitializer {
    @override
    Widget build(BuildContext context) {
      final count = cell(() => MutableCell(0));
      ...
    }
  }

  This can now be simplified to the following with version 0.5.0:

  class Example extends CellWidget {
    @override
    Widget build(BuildContext context) {
      final count = MutableCell(0);
      ...
    }
  }

Breaking Changes:

• CellInitializer has been renamed to CellHooks

• .cell() and .watch() have been moved from BuildContext to CellHookContext.

  This will not affect code that uses CellWidget.builder.

• State restoration options have been removed from .cell(). Use .restore() instead.