Performance and Feature Updates

This release shifts from a general open source license to the Tozny non-commercial license. Please read the license details to see how this affects your use of the library.

This release also introduces:

• Better documentation for the record query interface
• Dynamic client registration using tokens from the Tozny admin console
• Client credential backup during registration
• Optimistic concurrent locking for record deletion endpoints
• A flatter, simpler PublicKey interface
• Field-level select when reading an individual record