Json Web Signature implementation

For more info about this library see:

Public Variable Short Description
+signers-map+ (clj) Supported algorithms.
decode-header (clj) Given a message, decode the header WARNING: This does not perform any signature validation.
sign (clj) Sign arbitrary length string/byte array using json web token/signature.
unsign (clj) Given a signed message, verify it and return the decoded payload.