v0.4.12 -- Fix #2, log proxied messages to console

This release adds two configuration options:

• log_username, which will prepend the user's username when messages are logged to console, in the format (username)
• keep_original_message_event which will attempt to increase plugin compatibility by not cancelling the original message event, but merely clear its recipients to hide it from users. In this case, the original message is logged to console.

This release also fixed a bug where a user sending %member% in their message could have it replaced with their system info hover box.