Add outgoing raw line hooks

[linuxdaemon]

New Hook Type

Adds a new hook type hook.irc_out which allows a plugin to modify raw messages as they are sent out The result of a hook.irc_out function is used to replace the original message. Returning an empty string or None will result in the data not being sent and no further hooks will be launched.

New Plugin

Adds the core_out.py plugin which contains the core hook.irc_out hooks. The plugin does the following:

• Strips any \r or \n characters from a message (Can be disabled in the config)
• Truncates the message to a configured length
• Encodes the message using configurable settings
• Prepends a fixed string to a message that starts with common bot command characters (configurable, can be disabled by setting to an empty list). This is to prevent any command that returns user input from accidentally triggering other bots.

[linuxdaemon]

I'm adding another hook type, closing for now. Will reopen when it's ready to be merged.

[linuxdaemon]

Added hook.post_hook which is fired after a hook finished executing