Improvements to Topstone Park in Redding are being discussed by Town officials. Plans call for replacing existing playground equipment, addition of bear-proof garbage containers, new baby changing facilities and more benches.   The Board of Selectmen asked the Planning Commission to review the proposals, but it's not a formal referral so they will continue discussions once that it received.  The Commission has 35 days to provide a report to the Selectmen, but the clock has not started yet.  Members earlier this month talked about seasonal accessibility to the proposed playground, grounds maintenance, off-season access to bathroom facilities and garbage removal.