v0.7.0

• New prop API with hasWidgetProp() makes it easy to filter and assert properties of Widgets.
  This replaces the old hasProp() method which was based on way to complicated package:checks context.

  // Old ⛈️
  spotSingle<Checkbox>().existsOnce().hasProp(
      selector: (e) => e.context.nest(
        () => ['Checkbox', 'value'],
        (e) => Extracted.value((e.widget as Checkbox).value),
      ),
      match: (it) => it.equals(true),
    );

  // New ✨
  spotSingle<Checkbox>().existsOnce().hasWidgetProp(
      prop: widgetProp('value', (widget) => widget.value),
      match: (value) => value.isTrue(),
    );

  The prop API is also available for Element and RenderObject.

  New API methods for the prop API

  ├── Interface "NamedWidgetProp" added 
  ├── Interface "NamedElementProp" added 
  ├── Interface "NamedRenderObjectProp" added 
  ├── Function "widgetProp" added 
  ├── Function "elementProp" added 
  ├── Function "renderObjectProp" added 
  ├─┬ Class SelectorQueries
  │ ├── Method "whereWidgetProp" added 
  │ ├── Method "whereElementProp" added 
  │ └── Method "whereRenderObjectProp" added 
  └─┬ Class WidgetMatcherExtensions
  ├── Method "getWidgetProp" added 
  ├── Method "hasWidgetProp" added 
  ├── Method "getElementProp" added 
  ├── Method "hasElementProp" added 
  ├── Method "getRenderObjectProp" added 
  └── Method "hasRenderObjectProp" added 
  

• Never miss asserting your WidgetSelector.
  All methods returning a WidgetSelector are now annotated with @useResult.
  This will cause a lint warning when you only define a WidgetSelector without asserting it.

  spot<FloatingActionButton>().withChild(spotIcons(Icons.add)); // warning, no assertion
  
  final plusFab = spot<FloatingActionButton>().withChild(spotIcons(Icons.add)); // ok, assigned
  spot<FloatingActionButton>().withChild(spotIcons(Icons.add)).existsOnce(); // ok, asserted

• It is now easy to directly access the Widget of a SingleWidgetSelector with snapshotWidget().
  It also works for the associated Element and RenderObject. Use snapshotElement() and snapshotRenderObject().

  -final checkbox = spotSingle<Checkbox>().snapshot().widget;
  +final checkbox = spotSingle<Checkbox>().snapshotWidget();
  print(checkbox.checkColor);