Added bit more logging to USBConnection
Added bit more logging to USBConnection

This should make the debugging easier out in the field.

senttech/Cura,hmflash/Cura,fieldOfView/Cura,ynotstartups/Wanhao,Curahelper/Cura,fieldOfView/Cura,totalretribution/Cura,senttech/Cura,ynotstartups/Wanhao,hmflash/Cura,Curahelper/Cura,totalretribution/Cura