Common use-cases should be streamlined:
* I have a URL that I want to sign (given consumer key/secret, optional
token/secret, optional nonce/timestamp).
* I have a URL that I want to sign AND I want to see what the components
(e.g. signature base string, etc.) are while it's being signed (i.e. verbose
* I have a URL that I want to sign and I only want the signature.
* I have a URL
Copyright (c) 2007 Blaine Cook, Larry Halff, Pelle Braendgaard
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