Queue system

[NanoSector]

    /**
     * An explanation of how this works.
     *
     * Messages are to be 'scheduled'. That means, they will be assigned a time. This time will indicate
     * when the message is allowed to be sent.
     * This means, that when the message is set to be sent in time() + 10 seconds, the following statement is applied:
     * if (current_time() >= time() + 10) send_the_message();
     *
     * Note greater than, because the bot may have been lagging for a second which would otherwise cause the message to
     * get lost in the queue.
     */

• [x] Implement scheduling mechanism
• [x] Implement ability to undo a schedule
• [x] Write tests for everything
• [x] Create a loop and wire this into the loop (with a periodic timer?)
• [x] Create methods and classes for all message types (https://github.com/phergie/phergie-irc-generator/blob/master/src/GeneratorInterface.php can be a good reference). Methods in the Queue class can be used as a shorthand for creating a message class.

[NanoSector]

Done!