I do indeed plan to update all my assets with a 2.3 compatible version. I've just been really busy lately and haven't had a chance to do it.
I have updated the asset to make it compatible with 2.3+ versions of GameMaker. Note that I have changed quite a lot, so if you have already integrated Aura in a project, you shouldn't update as function names have changed and a few other things. But it's ready to be used in any new projects without issues.