Politically, September is just around the corner. Even as Rhode Island lawmakers exhale after Thursday's session-ending vote-a-rama, attention is already turning to unfinished business and a special back-to-school General Assembly session sometime after Labor Day. The headline topic this fall, beyond the Senate confirming judges, is to settle the long-burning issue of marijuana legalization. But there are more — many more — issues that people on Smith Hill have been working on that could return when the weather gets colder. Charter schools Talks on a proposed three-year moratorium on new charter schools continued until the final days of the legislative session, and with Gov. Dan McKee threatening a veto, the issue had the potential to grind business to a halt.