Refactored text output for Dashboard widgets
Improved build system
Added widget 'PC indicator'
Overhauled pin value system
Improved decentralization of special port functions
ADC: reading the result registers
ADC: code for getting the result
Completed support for ADC
Added a simplified way of specifying wires in the system description.
Added the AREF pin in the init section
Bugfix: Analog bus did not propagate new value when device was added
Bugfix: PushButton sent wrong initial value down pin
Added device 'VoltageSource'
ENC28J60: Added link status indication (no link change interrupt yet)
ENC28J60: Added support for writing to buffer memory
Switched to C++11
Added VirtualNetwork entity and made ENC28J60 a NetworkDevice

This framework uses the TUN/TAP driver to enable Ethernet access to
emulated devices.
Refactored ENC28J60 reset value handling
Implemented transmission for ENC28J60
Created class for storing Ethernet frames and refactored ENC28J60