Generate and upload animated image on push

[shtrom]

With plugins such as Twitter or Pump.io, it is easy to flood a stream with a bunch of selfies, not even taking amends and fixups into account.

It might make more sense for those to note post on commit, but rather to post a summary on push.

This would require a way to generate an animated picture of all recorded commits between two given revisions (or one and HEAD), and a hook which somehow would execute locally on push. Unfortunately, my githooks(5) doesn't list any that fit that bill at the moment.

[shtrom]

Ah. Pre-push hooks have been introduced in 1.8.2 [0].

[0] https://github.com/git/git/blob/master/Documentation/RelNotes/1.8.2.txt#L167

[matthutchinson]

Re-opening after GitHub weirdness