Lots of changes this winter on Gibbs Street at Rockville Town Square, where Little Dipper Hot Pot House is set to open next week while the neighboring Ev & Maddy’s appears to have closed. Little Dipper, which is taking over the corner spot that once housed Noodles & Company, offers flavored broths with noodles, vegetables and meats that you cook right at your table. Ev & Maddy’s, which earned good reviews for its European bistro-style menu, had been open for just two years in the space next door. It’s the fourth restaurant to fail at that address since 2007, following Bobby’s Crabcakes, Tippy’s Taco House and the short-lived 82 Steak Out. Also exiting Gibbs Street is the Ten Thousand Villages gift shop; more on that in our Feb. 2 edition.