Pinhook

* fix TwitchBot to work after changes to Bot

* bot now ignores all events from itself

Fixes:
- Issue with internal commands being a little too accepting of input that starts with the command prefix

New features
- Message object now includes msg_type
- disable help with argument
- dynamically add and remove ops

Fixes
- join command no longer crashes bot when too many arguments are received
- disabled plugins are no longer reenabled when reloading

New features:
- class based plugins
- dynamic enable/disable of individual commands and listeners
- enhanced help output

Add support for config-only initialization using the `pinhook` command

Better handling for MessageTooLong