Support for PHP 5.5-7.0 and HHVM is in version 1.x (branch `v1.x`) If you're upgrading from 2.x have a look at [upgrade notes](https://github.com/neomerx/json-api/wiki/Upgrade-Notes#to-30-from-2x) If you're upgrading from 1.x have a look at [upgrade notes](https://github.com/neomerx/json-api/wiki/Upgrade-Notes#to-20-from-1x).
Support for PHP 5.5-7.0 and HHVM is in version 1.x (branch
v1.x)If you're upgrading from 2.x have a look at upgrade notes
If you're upgrading from 1.x have a look at upgrade notes.