Steam Vanity Stuff Update (Patreon)

Okay, so Steam achievements look like alien to me code wise. I have no idea if they would work with GZDoom or how the hell could I implement them if they did.

However, Hedon was finally greenlit by Steam to allow trading cards, badges, custom backgrounds and emoticons, which I worked on adding today. Nothing too new, I mostly used the artwork laying around, but still, it's a nice touch community-wise. They will be available once with 1.4.0!