Add opAmp to subcircuits.
Debugger: improve Arduino variables detection.
Debugger: Add option to drive circuit simulation or not.
Feature Request #41 Arduino Mega 2560.
BugFix: Issues related with deleting mcu while simulating or debugging.
Add persistance to Clock and Wavegen on/off state.
BugFix: Avr not cleaning properly at reset.
Improve diode stability in some cases.
BugFix: RamTable not showing ram values by address.
BugFix: KeyPad: is posible to hide keys, make them unselectable.
