5.9

New config option for existing feature and also various tweaks.

• Thread safety when executing "lag" command from asyncchathandler
• Use the kick message from messages.yml when kicking a player into the
  "queue" (seems like he forgot to comment out his older code I guess)
• Use a hashset for ever-so-slightly better performance
• Use Apache's WordUtils#capitalize for neater-looking capitalization
• Added config option LaunchAndDropPlayers, defaults to true. Closes
  #6
• Reduced initial launch velocity to a sane amount. Also adjusted delay
  to teleport to compensate, if needed. Not tested though. Should now no
  longer trigger Paper's warning about excessive velocity.

I haven't done extensive testing, but this version is running live on my server, and it hasn't gone on fire yet, so it seems to be safe so far... you might want to test out a few teleports yourself though.