2.5.5
This is likely to be the last release in the 2.x branch. Going forward, use the 3.0 branch for PHP 8.0+ or PHP 7.3/7.4.
- Tag release 2.5.5 - Fixes #16
- Update composer.json to require PHP >= 5.3 || PHP <= 7.4
- Update Travis config to test PHP 7.3 and 7.4