losing position when endstop is hit

[midopple]

• When endstop is hit, stop making steps but count how many "virtual steps" are made. Then when moving in the opposite direction decrement the counter and start stepping when it hits zero.
• And when next recalculating update the current position with the virtual steps

Kliments idea if(!endstop)step;else(++counter); if(counter)counter--; else step;

[midopple]

Bug is solved, see --> https://github.com/kliment/Sprinter/commit/378426c766cc0a09d51b69dd1da1f2551a569833