add resize event

docs/src/docPages/api/events.md

@@ -31,6 +31,9 @@ const editor = new Editor({
   onBlur({ editor, event }) {
     // The editor isn’t focused anymore.
   },
+  onResize({ editor, event }) {
+    // The editor view has resized.
+  },
   onDestroy() {
     // The editor is being destroyed.
   },
@@ -70,6 +73,10 @@ editor.on('blur', ({ editor, event }) => {
   // The editor isn’t focused anymore.
 }
 
+editor.on('resize', ({ editor, event }) => {
+  // The editor view has resized.
+}
+
 editor.on('destroy', () => {
   // The editor is being destroyed.
 }
@@ -118,6 +125,9 @@ const CustomExtension = Extension.create({
   onBlur({ editor, event }) {
     // The editor isn’t focused anymore.
   },
+  onResize({ editor, event }) {
+    // The editor view has resized.
+  },
   onDestroy() {
     // The editor is being destroyed.
   },