[aur-general] aur-out-of-date: determine out-of-date AUR packages w.r.t. upstream

Hi aur-general, as a maintainer of fifty-something AUR packages I found it difficult to keep track of new upstream versions. I would subscribe to various RSS feeds to keep track of some. Recently, I sat down and wrote a tool "aur-out-of-date" which, given a username or a list of packages, checks upstream for newer versions. It does so by inspecting the upstream URL and/or source URL, and calling a suitable API (github.com, registry.npmjs.org, pypi.python.org, cpan.org for now) to determine the latest released version. Out-of-date packages are output in red color on the command line. Give it a try: https://github.com/simon04/aur-out-of-date https://aur.archlinux.org/packages/aur-out-of-date/ I'm happy to hear you feedback :) Simon