Handle UnrealIRCd Raw 307 unhandled message

[vBm]

Using npm version 0.8.1. and we get this error. Same issue was present since the start on the original project.

ERROR: Unhandled message: { prefix: 'irc.example.net',
  server: 'irc.example.net',
  command: '307',
  rawCommand: '307',
  commandType: 'normal',
  args: [ 'Bot', 'Bot', 'is identified for this nick' ] }

307 is defined here.

[Throne3d]

This appears to have conflicting definitions per https://www.alien.net.au/irc/irc2numerics.html:

• RPL_USERIP (?)
• RPL_WHOISREGNICK (Bahamut, Unreal)
• RPL_SUSERHOST (AustHex)

For now, I think I'm just going to mark it as a reply type, rather than actually giving it a command name. This will prevent it from showing as an unhandled message like this, while still allowing the message to be detected by checking (in an event handler to the raw event) for messages with rawCommand set to "307"