Update to 1.2.21

[davidchase]

hi @bclinkinbeard,
is it possible to update your angular version to the latest stable?
maybe you can accept PRs for when new versions come along.

Thank you
-David

[bclinkinbeard]

Done. I would love to farm this out to PRs, but I would still have to do the publish step, so these reminder tickets are probably what we're stuck with for now. :)

[davidchase]

@bclinkinbeard thanks a lot 👍