mass update flippers -> flippers_(anatomy)
remove alias swim_fin (0) -> swimming_fins (208)
remove alias swim_fins (0) -> swimming_fins (208)
remove alias swimfin (0) -> swimming_fins (208)
remove alias swimfins (0) -> swimming_fins (208)
remove alias swimming_fin (0) -> swimming_fins (208)
remove alias swimmingfins (0) -> swimming_fins (208)
remove alias swimmingfins (0) -> swimming_fins (208)