Refactoring to add state machine code
Add virtual timers code.
Added automatic demonstration change speed code
Added simply READLINE-like code.
Added speed measurement code
Merge branch 'usart-console' into encoders

Conflicts:
	Makefile
	main.c
	state_machine.c
Add PID regulator
Modbus code
Merge branch 'modbus' into encoders

Conflicts:
	Makefile
	main.c
	stm32f10x_it.c
	usart.c
	usart.h
Add PID tuning via modbus
PID code refactoring
Add acceleration/deceleration code
Little Fix