Fix CTCP commands always sent upper-case

This is a Node v6+ only fix.
`irc-framework` upper-cases the first argument, and we were sending everything as a string in first argument. This correctly splits.

src/plugins/inputs/ctcp.js

@@ -4,6 +4,6 @@ exports.commands = ["ctcp"];
 
 exports.input = function({irc}, chan, cmd, args) {
 	if (args.length > 1) {
-		irc.ctcpRequest(args[0], args.slice(1).join(" "));
+		irc.ctcpRequest(...args);
 	}
 };