No CCU Interrupt when tccr=65535

[roy77]

if(counter<tccr)... in Timer.java is not working if counter is wrapped

A solution is to use the "bigcounter".
Calculate bigcounter
Subtraction tccr-bigCounter
Wrap the result with modulo Operation (the current timer wrap value)
=> get the correct div

Also the timer in Updown Mode results in problems.

I probably solve all in my fork.