Best served cold Wednesday, Aug. 19 — It’s Cathy from Rough Draft with my weekly newsletter on Dunwoody. It’s been an interesting few weeks for development in the city, with some major projects moving through the Dunwoody Planning Commission and heading toward the city council for consideration. Before we get to that and other stories of interest, here are a few newsy items. The Dunwoody Nature Center’s Butterfly Experience lands on Labor Day we…