Feature Request: Elastic and other preset easings for UMG/Matinee curves

At the moment it’s very hard to implement elastic and bouncing easings.
I use it a lot for UI poping in and out and with just cubic beziers it requires a lot of trial and error to get a nice feeling for a elastic movement.
It would be awesome to pick from a number of preset easings (http://easings.net/), which is a common feature in a lot of tweening libraries.