We can wave goodbye to another General Assembly session as legislators head back to their home districts, most of them planning to run for another two-year term as part of the circus under the Gold Dome.This year, as in all even-numbered years, there were several lawmakers who decided to call it a career, as far as elective politics go. In some cases, taxpayers and advocates of clean government can heave a sigh of relief at the decisions to retire. There are a few legislators, however, who made a contribution to the greater good during their years in office and will be sorely missed.Rep. Roger Williams, R-Dalton, is one of those people.