Fix code to match project coding style guidelines.
Some files where written using the Arduino IDE which uses different tab sizes and some code that was originally in the project is using an older coding style. They should be updated to match the coding style used in the rest of the project.
Files that need to be updated:
- mainLoop.ino
- steppers.cpp (part of it is okay but not all of it)
- steppers.h
- possibly other files?