v1.2.0.0	2017-07-31

Keep the API name of Windows and Linux consistent.
Statically complile hprtio.dll to ESC_SDK.dll. 

New Function:
			SetInternationalCharacter();
			SetCodePage();
			SetBuzzer();
			GetCashDrawerState();
			ClearBuffer();
			PrintBitMapData();

Modified Function:	
			OpenDrawer() ---> OpenCashDrawer();
			GetPrinterVersion() ---> GetFirmwareVersion();
			CheckPrinterState() ---> GetPirnterState();


Deleted Function:
			SetTextPosition(): this function is same to SetAbsolutePrintPosition();