Fix import queue Error

[Aurélien]

Hi,

First, many thanks for your work !
To avoid the import queue error:

File "./WhatsAppGDExtract.py", line 9, in
import queue
ImportError: No module named queue

You could write:

import sys
PY2 = sys.version_info[0] == 2
PY3 = (sys.version_info[0] >= 3)

#import queue
if PY2:
    import Queue as queue
else:  # PY3
    import queue