I recently discovered Squat Nimbleness and thought that it would be a great feat, as I am playing a goblin.
I ran into some problems, however. I noticed in the Unearthed Arcana official PDF for racial feats that says it is only for dwarfs, gnomes, or halflings (boo).
But I found a conflicting source. In Xanathar's Guide to Everything, it says that the prerequisite is for you to be a dwarf or a Small race (yay!).
Furthermore, the feats themselves are a bit different on the sources. In Xanathar's, it states that I would have advantage on escaping grapple checks, and get proficiency in Athletics or Acrobatics. In the Unearthed Arcana racial feat PDF, it says that I could gain the Acrobatics or Athletics, and if I am already proficient, then double the proficiency.
Overall I'm a bit confused about which feat is correct, or if I can even take it.
Which of these versions is the correct one?