Farnsworth is disabled if less than WPM

[kenfallon]

When I was setting it up based on I had a look at the settings in Practice & Homework Assignments. It says that "Initially setup MCT to 25cpm (Character speed) with at least 4wpm (Farnsworth speed)". So I had a go at trying to set up those settings in the K3NG keyer but ran into a problem that the Words per minute can't be bigger than the Farnsworth speed.

https://github.com/k3ng/k3ng_cw_keyer/blob/master/k3ng_keyer/k3ng_keyer.ino#L15746

if (configuration.wpm_farnsworth < configuration.wpm) {

I'm probably setting this wrong as I can't be the first to come across this.

I'm trying to replicate the CWops Morse Code Trainer "Character speed" of 24 and "Farnsworth speed" of 4.