* mboretto/feature/smartinterface:
  conversation as internal member

Conflicts:
	src/Commands/AdminCommands/SendtochannelCommand.php

Refactor a bit to facilitate testing.
Add missing documentation.

Cancel command

Add more documentation.
Refactor code and adjust output to user.

Use the new emptyResponse() method

Allow backwards compatibility when managing only one channel.

Correct typos and minor code styling.

New command structure alpha

Rename test Helpers class to TestHelpers.

Fix missing namespace use.