docs(igx-grid): update docs and changlog #2530

Author: Lipata

Diff for: CHANGELOG.md

@@ -32,6 +32,8 @@ For more detailed information, see the [README](https://github.com/IgniteUI/igni
 - `igxGrid`:
     - **Breaking change** `onGroupingDone` - The array of `ISortingExpression` can now be accessed through the `expressions` event property. Two new properties have been added to the event arguments - `groupedColumns` and `ungroupedColumns`. They provide references to arrays of `IgxColumnComponent` that hold the columns which have changed their state because of the **last** grouping/ungrouping operation.
 
+    - **Breaking change** `onEditDone` is renamed to `onCellEdit` and new cell editing events are introduced: `onCellEditEnter` and `onCellEditCancel`. When row editing is enabled, the corresponding events are emitted by the grid - `onRowEditEnter`, `onRowEdit`, `onRowEditCancel`. All these events have arguments that are using the `IGridEditEventArgs` interface.
+
     - Row editing - allows modification of several cells in the row, before submitting, at once, all those changes to the grid's data source. Leverages the pending changes functionality of the new transaction provider.
 
         ```html

Diff for: projects/igniteui-angular/src/lib/grids/README.md

@@ -190,9 +190,12 @@ A list of the events emitted by the **igx-grid**:
 |Name|Description|
 |--- |--- |
 |_Event emitters_|_Notify for a change_|
-|`onEditDone`|Emitted when a cell value changes. Returns `{ currentValue: any, newValue: any }`|
-|`onRowEditDone`|Emitted when a row value is submitted. Returns `{ state: State }`|
-|`onRowEditCancel`|Emitted when a row value is submitted. Returns `{ state: State }`|
+|`onCellEditEnter`|Emitted when cell enters edit mode.|
+|`onCellEdit`|Emitted when cell editing has been performed in the grid and the value has been submitted.|
+|`onCellEditCancel`|Emitted when cell editing has been performed in the grid and the value has **not** been submitted.|
+|`onRowEditEnter`|Emitted when row enters edit mode.|
+|`onRowEdit`|Emitted when row editing has been performed in the grid and the value has been submitted.|
+|`onRowEditCancel`|Emitted when row editing has been performed in the grid and the value has **not** been submitted.|
 |`onCellClick`|Emitted when a cell is clicked. Returns the cell object.|
 |`onColumnMoving`|Emitted when a column is moved. Returns the source and target columns objects. This event is cancelable.|
 |`onColumnMovingEnd`|Emitted when a column moving ends. Returns the source and target columns objects. This event is cancelable.|