refactor request: multiline messages & comments

[SKalt]

Consider the following:

# is this one comment
# or is it two?
And is this a single message
or is it many messages?

I'd argue that the tree

(comment)
(message)

fits better than

(comment)
(comment)
(message)
(message)

What do you think? Would you be willing to accept a PR that parses multiline comments and messages?

[the-mikedavis]

Yep this would be a nice change 👍