Change CreateChar (int, int[]) to (int, byte[])

[Gasman2014]

Adjusted CreateChar to use byte charmap.

[eddyp]

I agree with these changes, especially since the int usage is gratuitous and the upper byte is lost when passed to write.

[eddyp]

IMHO, a similar change should be propagated into _send, _sendNibble and _write2Wire for value and halfByte. In the end, the Wire library has some helper members to handle the type mismatches, but they are all eventually mapped to virtual size_t write(uint8_t);.

[mathertel]

seams a reasonable change. Thanks for the contribution.