Convert xml output to 'utf-8'

@erMaurone thanks!

0.7

Response is object

0.6

return str reponse, bump version

0.5

response is str, decoding not required in python3

Import python3 module urlunparse from lib

0.4

release a new version

Fixed module import

0.3

Fix module import

Documentation changes

0.2

update release version

oktaauthpy3

Rename the package name
The urlparse module is renamed to urllib.parse in Python 3