Well, it’s springtime and that means one thing to a lot of people – spring cleaning. But before you donate your items to charity, or take them to the curb, our PC Mike Wendland says you should consider selling stuff you want to get rid of with one of a number of apps that make it easy to cash in. With the Carousell app, buyers can check out listings for everything from fashion, clothes, and accessories to furniture, art, books, cars, bikes, and more. Sellers can take advantage of the easy listing process that takes about 30 seconds. There’s even a feature to set up so-called “groups” that can be…