jetring - 0.27 main

jetring is a collection of tools that allow for gpg keyrings to be maintained
using changesets. It was developed with the Debian keyring in mind, and aims
to solve the problem that a gpg keyring is a binary blob that's hard for
multiple people to collaboratively edit.
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With jetring, changesets can be submitted, reviewed to see exactly what they
will do, applied, and used to build a keyring. The origin of every change
made to the keyring is available for auditing, and gpg signatures can be used
to further secure things.