Add PlaceholderAPI placeholders for shop and vote

Closes #16 and closes #54

Fix FileAlreadyExistsException after server upgrade (fixes #50)

Fix build

Prevent remapping on Paper 1.20.6/1.21

Correctly handle HTTP redirects & async SkinsRestorer requests

Closes #40

Refactor tests & universal SkinsRestorer integration

Closes #34 and closes #35

Update users API & support SkinRestorer v15

Closes #32

Manually download netty-codec-http when missing (fixes #29)

AuthMe, SkinRestorer & LimboAuth integrations

Closes #17, closes #24 and closes #26

Add FabricMC support (#23)