PHP 8 Support

[gbenitez]

Hi good day. When will you have support for php 8?

[object505]

Any update about this?

[yanfon]

Hello, update in next weeks/months ?

[SnelleJelle8]

If you want PHP 8 support you can just create a PR? :-)

[fedeisas]

@joostsolvari I started working on this here: #40

Moved the CI to Github Actions (travis-ci.org is shutting down).

Couldn't get the tests to pass though.