No attribute get-np_arr_8_string

[RolMaTe]

Hi,

I am currently using your library to use some loadcells with a Raspberry Pi 4+.
The values I get are super random so I want to debug the values of MSB en LSB.

According to your code in ' example.py' there should be two functions called 'get_np_arr8_string()' and ' get_binary_string()'. Both functions are not available.
Could you add them in the library?