Refactor command builder #37
Description
We currently have a lot of classes/interfaces related to command configuration.
ICommandConfigurationBuilderICommandConfigurationBuilder<TSource>ICommandBuilder<TOption>ICommandBuilder<TOption, TCommandOption>
A lot of properties and methods are being duplicated. This has been done to not expose unwanted methods/properties in the public API.
Refactor of those interfaces/classes are needed for the 0.3 release.