Update CHANGELOG.md

Author: photonstorm

CHANGELOG.md

@@ -38,6 +38,8 @@ The following features are now deprecated and will be removed in a future versio
 * `getAll()` is a new method in the HTML and Web Audio Sound Managers that will get all sounds in the manager matching the given key, if any (thanks @samme)
 * `removeAll()` is a new method in the HTML and Web Audio Sound Managers that will remove all sounds in the manager, destroying them (thanks @samme)
 * `stopByKey()` is a new method in the HTML and Web Audio Sound Managers that will stop any sound in the manager matching the given key, if any (thanks @samme)
+* `Rectangle.FromXY` is a new function that will create the smallest Rectangle containing two coordinate pairs, handy for marquee style selections (thanks @samme)
+* `PathFollower.pathDelta` is a new property that holds the distance the follower has traveled from the previous point to the current one, at the last update (thanks @samme)
 
 ### Updates