use don't use jeweler to manage gem releasing.
deployment target is a capistrano concern, not bard.
inline bard push, only being used once, internally.
extract Bard::CLI::CI from Bard::CLI#ci.
rewrite bard deploy to not need to change git HEAD.
compose Bard::CLI::Git, rather than including it.
update README and LICENSE.
release v0.23.1.