digispark i2c bug in ReadByte() & WriteByte()

[gen2thomas]

ReadByte()/WriteByte() don't rely on Read(buf)/Write(buf) but call the "littlewire.i2cRead(b, 1, 1)"/"littleWire.i2cWrite(b, 1, 1)" directly. This results in missing START-condition, which is normally done with littleWire.i2cStart(c.address, 1), refer to Read(buf)/Write(buf)-function. Therefore all functions based on ReadByte()/WriteByte will not working like expected, which is currently only ReadByteData(). For working example, see firmata_i2c.go

I will provide a bugfix asap, this could be a workaround:
func (c *digisparkI2cConnection) ReadByte() (val byte, err error) {
buf := []byte{0}
if _, err = c.Read(buf); err != nil {
return
}
val = buf[0]
return
}