Syntax error when importing pyotb on Python <3.8

The syntax used by pyotb in shape method is wrong for python 3.6 and 3.7. Error message when trying to import pyotb on those python versions:

File "pyotb/core.py", line 88
    return *image_size, image_bands
           ^
SyntaxError: invalid syntax

Solution: Instead of return *image_size, image_bands, it should be return (*image_size, image_bands)