Add clearSelection() method

Author: karlvr

src/SketchField.jsx

@@ -462,6 +462,12 @@ class SketchField extends PureComponent {
     return !!canvas.getActiveObject();
   }
 
+  clearSelection = () => {
+    let canvas = this._fc;
+    canvas.discardActiveObject();
+    canvas.requestRenderAll();
+  }
+
   /**
    * Remove selected object from the canvas
    */

types/index.d.ts

@@ -155,7 +155,8 @@ declare module 'react-sketch' {
 		clear(propertiesToInclude?: ArrayLike<string>): string
 
 		hasSelection(): boolean
-		
+		clearSelection(): void
+
 		/**
 		 * Remove selected object from the canvas
 		 */