Version changed to 0.7.1.0
Revise PasswordHelper again; add SCrypt

Summary merge: 'beta-fixes'

* Version changed to 0.7.1.0
* Normalize packages
* Many changes
* Move and rename BCrypt.NET license
* Normalize AssemblyInfo files
* Improve AutoDictionary and make it public
* Add an interface for objects which log
* Rename HashLengthBytes to KeyLength
* Clean up for ReSharper
* Add an SCrypt test