Missing support for Atmega128

[giabattag]

Good morning,

I would like to use TimerOne on Atmega128 through MegaCore (https://github.com/MCUdude/MegaCore). Is it doable? How should I modify the program? I am interested mainly in the "attachInterrupt" and "detachInterrupt" functions.

Thank you for your time.

[nathancheek]

I just submitted PR #67 that adds support for the ATmega128.