Is there a way to duplicate a footprint in one library into another for making changes? Or "create new footprint starting with existing footprint"?
I want to make a footprint for Adafruit's Itsy Bitsy 32u4. It's basically a 28 pin 0.6" DIP with five additional pins along one of the short ends. I could make it from scratch, but the built-in 28 pin DIP footprint has everything I need (except for the additional five pins, which should be easier to add than creating the footprint from scratch).
Adafruit provides Eagle files for their products, so it may be possible to import one of those into KiCad then extract the PCB as a footprint, but if that's my only option, I'll probably create the footprint I want from scratch as practice.