add an option for a 60 Hz notch filter

[swharden]

The python software here https://github.com/swharden/diyECG-1opAmp uses a software notch filter to remove 60 Hz noise.

Create an option similar for this program. It's not needed for the AD8232, but it is very useful for noisier circuits.

This suggestion was emailed from Sachin Nepali