Added WsgiError, WsgiSession.
Added support for context in RequestHandler.
Added cookie support in WsgiApplication.
Added support for template variables.
Added support for reading raw input data, input data as dictionary and obtaining base URL.
Fixed NameError with logging (changed to getLogger()) in sqlite.
Updated WsgiApplication.query_string to query and added querydict.
Added some error handling to WsgiApplication.datadict.
Fixed issue between logical and comparison operators in datalayer.
Removed all references to get_primary_key in favor of pk in datalayer.
Added default return value to WsgiApplication.get_status.