SimpleFOClibrary version 1.6.0

Stepper motor FOC support 🎨🎉 🎊
- Very easy to use and results are great, I love it!
- backdrivable,
- no losing steps
- short demo youtube video
Pull requests by @cousinitt
- refactoring and c++11 improvements
- pid + low pass filter refactoring
Extended configurability of the sensor classes @owennewo
- clock frequency
- pinout configuration
- quick config constructors
configurable pwm frequency by Jürgen Frisch
- stm32,teensy,eps32 - not for Arduino
- stm32 added 12bit pwm resolution
Teensy support by Christopher Parrott
Huge refactoring done in the library 😄

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