Update CHANGELOG.md

Author: photonstorm

CHANGELOG.md

@@ -235,6 +235,7 @@ All of the following are specific to the Matter Physics implementation used by P
 * The `ScaleManager.destroy` method wasn't being called when the Game `DESTROY` event was dispatched, causing minor gc to build up. The destroy method will now be called properly on game destruction. Fix #4944 (thanks @sunshineuoow)
 * `FacebookInstantGamesPlugin.showAd` and `showVideo` will now break out of the ad iteration search once a valid ad has been found and called. Previously, it would carry on interating if the async didn't complete quickly. Fix #4888 (thanks @east62687)
 * When playing an Animation, if you were to play another, then pause it, then play another the internal `_paused` wouldn't get reset, preventing you from them pausing the animations from that point on. You can now play and pause animations at will. Fix #4835 (thanks @murteira)
+* In `Actions.GridAlign` if you set `width` to -1 it would align the items vertically, instead of horizontally. It now aligns them horizontally if `width` is set, or vertically if `height` is set. Fix #4899 (thanks @BenjaVR)
 
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