Python3 type issue

[jwahsnakupaku]

When trying to use pywdns to read an existing .nmsg file I run into the following error on Python3.
If I set it all up on Python2, it works fine.

Using the following;
CentOS Stream
Python 3.9
Latest pywdns commit from this repo.
Latest releases for mtbl, wdns, etc.

Stack trace

$ cat nmsg_test/*.nmsg | python ~/simple_py3_test.py 
Traceback (most recent call last):
  File "/home/jwah/simple_py3_test.py", line 23, in <module>
    test_parse_nmsg(sys.stdin)
  File "/home/jwah/simple_py3_test.py", line 16, in test_parse_nmsg
    base_dnsqr_response = wdns.parse_message(base_dnsqr['response'])
  File "wdns.pyx", line 593, in wdns.parse_message
  File "wdns.pyx", line 858, in wdns.edns.__init__
TypeError: Expected str, got bytes

Sample Script

import sys
import nmsg
import wdns

def test_parse_nmsg(input):
    dnsqr = nmsg.input.open_file(input)
    dnsqr.set_filter_msgtype('base', 'dnsqr')
    more = True
    while more:
        base_dnsqr = dnsqr.read()
        if not base_dnsqr:
            more = False
        elif (base_dnsqr['type'] == 'UDP_QUERY_RESPONSE' and 'response' in
             base_dnsqr):
            try:
                base_dnsqr_response = wdns.parse_message(base_dnsqr['response'])
            except wdns.MessageParseException:
                pass

if __name__ == '__main__':
    test_parse_nmsg(sys.stdin)

[cmikk]

Merged fix, thank you!

Will close issue when this is released.