Wow Matcher, why don't you do this automatically.
The Event I'm catching does not even fire for console. Removed config option and useless check.
Looks like Bukkit does not want to provide an Event for actual COMMAND TAB Completion, so we're gonna use ProtocolLib.
Also, remove redundant call to Matcher#find() and improve an if statement.
Merge remote-tracking branch 'origin/master'