I've made a library component for the Attinyxx26, but the component comes in 3 packages. 2 have 20 pins. The 3rd has 21 pins from a thermal pad. I'd like to have 1 library component that I can switch between the 3 footprints. Is there any way to do this without
1: having the thermal pad also be set as pin 20
2: The software complaining about extra pins when it compiles