implement V_2_02/V_2_03 methods, add callbacks, allow
attach to interface already open, fix some bugs and refactor
sysex-handling...
working on OneWire protocol
redesigned OneWire messages. Execute 'reset'->'select'->'write' resp.
'reset'->'select'-'write'->'read' with a single message.
Implemented OneWire reporting.
Update lib/Device/Firmata/Protocol.pm
Merge pull request #2 from ValdasRK/patch-2

Patch 2
Added firmware_version_query(), capability_query(), analog_mapping_query() 
Automatically select supported protocol.
Merge pull request #3 from ValdasRK/patch-3

Added firmware_version_query(), capability_query(), analog_mapping_query()
Merge pull request #4 from ValdasRK/patch-5

Automatically select supported protocol.
The endless loop removed.

Who knows, how to handle the analog mapping response?
Merge pull request #1 from ValdasRK/patch-6

Patch 6