[aur-general] Update notifications

[Justin Dray]

Hi,

I was thinking it could be useful to show in comments when a new version is
pushed by the maintainer of a package; just a line break and maybe v1 -> v2
or the git commit message or something. It would be easier to make sense of
comments on many of the packages I've seen and allow us to see if comments
pertain to the current version or not without losing comment history.

Cheers,
Justin