sign JSON with Ed25519 signatures
Signs JSON objects with ED25519 signatures.

- More than one entity can sign the same object.

- Each entity can sign the object with more than one key making it
easier to rotate keys

- ED25519 can be replaced with a different algorithm.

- Unprotected data can be added to the object under the "unsigned" key.

Maintainer: Renaud Allard <renaud@allard.it>

WWW: https://pypi.python.org/pypi/signedjson
