Add another entropy calculator
Add missing NET45 flag to Rhllib.Security
Split off common AssemblyInfo declarations

into two shared files, which can then be shared among all projects.
This idea comes from SignalR.
Improve Functions.TypeName

Now converts basic type names into their keyword forms, and also handles
converts Arrays properly.

* Add unit tests for Functions.TypeName

* Also fix a few instances of namespace Rhllib.Tests.Functions (into
  Rhllib.Tests.FunctionTests).
Add Rhllib.Utility.Config, draft 1

This is a class for convenient storing, retrieving, and modifying
configuration properties.