Update CHANGELOG-v3.50.md

Author: photonstorm

CHANGELOG-v3.50.md

@@ -694,6 +694,7 @@ Since v3.0.0 the Game Object `render` functions have received a parameter called
 * The `GameObjects.Graphics.fillGradientStyle` method can now accept a different alpha value for each of the fill colors. The default is still 1. If you only provide a single alpha, it'll be used for all colors. Fix #5044 (thanks @zhangciwu)
 * `Cameras.Scene2D.Events.FOLLOW_UPDATE` is a new Event that is dispatched by a Camera when it is following a Game Object. It is dispatched every frame, right after the final Camera position and internal matrices have been updated. Use it if you need to react to a camera, using its most current position and the camera is following something. Fix #5253 (thanks @rexrainbow)
 * `Types.Core.PipelineConfig` is a new configuration object that you can set in the Game Config under the `pipeline` property. It allows you to define custom WebGL pipelines as part of the Game Config, so they're automatically installed and ready for use by all Scenes in your game. You can either set the `pipeline` object, or set it under the `render` sub-config.
+* `Utils.Object.DeepCopy` is a new function that will recursively deep copy an array of object.
 
 ### Updates and API Changes