replace linux_distribution function

[yearski]

linux_distribution() has been removed from the platform library. This pull request uses platform.release() for the user agent string for linux clients.

#7 is also a viable alternative, but requiring a 3rd party package seems overkill just to generate a user agent string but using the release() will not be consistent with historical data, @rdegges decision if that is significant.

[fchorney]

Without this fix, this package doesn't work on python 3.8. Would it be possible to get one of these PRs merged in and a new release any time soon? @rdegges

Thanks!

[col-panic]

Just stumbled upon this - interesting that this is still open :)

[yearski]

Just stumbled upon this - interesting that this is still open :)

This repo is no longer maintened per comment on other pull request https://github.com/rdegges/python-ipify/pull/11#issuecomment-675226907.

[SigireddyBalasai]

i am creating new module with syncronous asyncronous and cli named PyIpify