feat(ObserveBoundingClientRect): deprecate component

Author: garthenweb

README.md

@@ -60,7 +60,7 @@ The project aims to support recent releases of v8 and v10 and higher of NodeJS.
 * [`NEW useScroll`](docs/api/ObserveViewport_connectViewport_useViewport.md#hooks-useviewport-usescroll-usedimensions-useLayoutSnapshot)
 * [`NEW useDimensions`](docs/api/ObserveViewport_connectViewport_useViewport.md#hooks-useviewport-usescroll-usedimensions-useLayoutSnapshot)
 * [`NEW useLayoutSnapshot`](docs/api/ObserveViewport_connectViewport_useViewport.md#hooks-useviewport-usescroll-usedimensions-useLayoutSnapshot)
-* [`ObserveBoundingClientRect`](docs/api/ObserveBoundingClientRect.md)
+* [`ObserveBoundingClientRect (deprecated)`](docs/api/ObserveBoundingClientRect.md)
 * [Types](docs/api/types.md)
 
 ### Concepts

docs/api/ObserveBoundingClientRect.md

@@ -1,8 +1,8 @@
-# ObserveBoundingClientRect
+# ObserveBoundingClientRect (deprecated)
 
 Observes for changes to the bounding client rect of a given reference.
 
-**!!! Be careful with this component. It can cause really bad performance if overused and needs a refactoring !!!**
+**!!! Be careful with this component, it can cause really bad performance if overused. Therefor it is deprecated and will be removed with the next mayor release, it is recommended to switch to the new useReact or useReactEffect hooks instead !!!**
 
 ``` javascript
 import * as React from 'react';

lib/ObserveBoundingClientRect.tsx

@@ -32,6 +32,9 @@ interface IState extends IRect {
   isInitialized: boolean;
 }
 
+/**
+ * @deprecated Use useRect or useRectEffect instead as it provides better performance.
+ */
 export default class ObserveBoundingClientRect extends React.PureComponent<
   IProps,
   IState