v1.2.2

Changes

• Added dc_user_from_id(id)
• Added dc_message_from_id(id, channel)
• Added dc_webhook_from_id(id, token)
• Added dc_webhook_from_url(url)
• Added message~'nonce'
• allowed_mentions to message content parser (Resolves #25)
• reply_to to message content parser
• nonce to message content parser
• tts to message content parser
• Added allowed mentions parsable