Update to 3.4.2

[tavurth]

I noticed that someone has forked this repository, and removed the backlinks to this repository.

Related issue: https://github.com/StudioAdriatic/PGSGP/issues/4

Perhaps we can just drag his changes in here (without the patreon link) to keep this repository up-to-date with 3.4.2?

[mojoyup]

I wish there was a 3.4.4 stable because steam Godot is 3.4.4. ...