Allow new lines in Broadcast message

There doesn't appear to be a way to allow new lines in the Broadcast Message:

It would be useful to be able to have new lines to increase readability of what may be important messages

(Recently needed to add a long message, but wasn't able to format it in a nice way)

Bearing in mind that the message is also shown in the terminal when doing a git push, so probably won't be able to go as far as HTML/MDL format - But new lines would be cool