This is a fork of the Bounce2 Debouncing library for Arduino or Wiring by Thomas Ouellet Fredericks that is designed to work with buttons that are attached to a MCP23017 GPIO port expander.
I have made one other small modification to the Bounce2 library, and that is to include the interval_millis setting in the initial attach declaration.
Enjoy!
Here is the original Library: https://github.com/thomasfredericks/Bounce2
Post your question here: https://forums.adafruit.com/viewtopic.php?p=349792