bug fix: marker and maxitems for User objects working now.
bug fix: marker and maxitems for User objects working now.

see: http://wiki.kayako.com/display/DEV/REST+-+User#REST-User-GET%2FBase%2FUser%2FFilterORGET%2FBase%2FUser%2FFilter%2F%24marker%24%2F%24maxitems%24

kayako/python-api-library,sahilsehgal81/python-api-library,ravi-sharma/python-api-library,nagyv/python-api-library