amo-changelog fetches the Version History of an addon from the Mozilla Extensions website. It is meant
to offer an easy way to include upstream changelogs in Debian packages of mozilla extensions - in many
cases, this is not contained in the upstream source code repository, but is available on said website.
The extension argument is its short name, as used by the website. For example, the homepage for "Adblock
Plus" is https://addons.mozilla.org/en-US/firefox/addon/adblock-plus/, so the short name would be
"adblock-plus".
Here is an example for debian/rules:
# if using debhelper
override_dh_installchangelogs:
dh_installchangelogs debian/upstream/changelog.html debian/upstream/changelog
.PHONY: get-orig-changelog
get-orig-changelog:
amo-changelog -p rst adblock-plus
Using this approach, one would save the output files debian/upstream/{changelog.html,changelog} as part
of the Debian packaging. When updating the package with a new upstream release, one would run
`debian/rules get-orig-changelog`