- Analog2DigitalConverter, RealTimeClock, TimerCounter: attach ISR handler on demand
- Analog2DigitalConverter, TimerCounter: changed access to private methods and members to protected
- Analog2DigitalConverter::PIN_MAPPING: fixed mapping for AIN 10 .. 19
- TimerCounter::enable: added TC4/TC5 32-bit mode cross check
- documentation updated