Allow PSHostRawUserInterface to be used as base class.
Implement Size struct used by PSHostRawUserInterface.
Add missing verbs.
Allow the CommandRuntime to be set for a cmdlet.

The CommandRuntime property should probably be moved to the Cmdlet class.

http://msdn.microsoft.com/en-us/library/system.management.automation.cmdlet_properties.aspx
Implement CategoryInfo on an ErrorRecord.
Add missing error categories.
Implement InitialSessionState's ImportPSModule method.
Implement SessionStateVariableEntry.
Allow variables to be added to InitialSessionState.
Merge pull request #144 from mrward/hosting

Hosting in SharpDevelop