Update from upstream SpigotMC
Skip invalid enchants in CraftMetaItem SpigotMC/Spigot@542e0798daa57976f0b07dcd0eb03e8c46cec197
Add a few links to the README.md
Show 'PaperSpigot' in client crashes, server lists, and Mojang Stats
Remove Metrics
People seem fairly mixed on it, and we just don't need 'em
Fix build link in README.md
Remove invalid mob spawner tile entities