Split .h and .cpp

[matteogaria]

Hi,
using include guards is not useful if declaration and definition are in the same source file.
In a complex project, where the .h is included by several source file, you get a linker error like this:

libraries\core\device.cpp.o (symbol from plugin): In function Crc16::reflect(unsigned char)':
(.text+0x0): multiple definition of Crc16::reflect(unsigned char)' sketch\dualRelay.ino.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\core\device.cpp.o (symbol from plugin): In function Crc16::reflect(unsigned char)':
(.text+0x0): multiple definition of Crc16::reflect(unsigned int)' sketch\dualRelay.ino.cpp.o (symbol from plugin):(.text+0x0): first defined here libraries\core\listener.cpp.o (symbol from plugin): In function Crc16::reflect(unsigned char)':`

solution is to split header and implementation file (.h & .cpp)

Best Regards and thanks for your work