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* GeoIP database download now requires a license key to download. The license
key must be added to the config file of privacyscanner. This is a breaking
change.
* Remove Python 3.5 support. privacyscanner might still run under Python 3.5,
however, we will no longer guarantee that is does in future. Upgrade your
Python to 3.6 or better. This is a breaking change.
* Fix: Host parsing of MX records is now more compliant