Parting really is sweet sorrow as the Suzanne Farrell Ballet, after 17 years, offers its final performances this week. Its budget and company size have been unsteady, but you'd never know it from Thursday evening's stirring, polished swansong performances of Balanchine classics. To call Farrell a Balanchine muse is a radical understatement. Balanchine created 23 […] The post Suzanne Farrell Ballet takes its fin…