Create FUNDING.yml

Specify PHP minor version (bug on travis)

Include PHP 8.1 in unit tests

Merge pull request #47 from fire015/php8-update

Update travis references

Update tests for PHP 8

Update composer.json

Update README.md

Merge pull request #46 from fire015/travis-php-74

Add PHP 7.4 to travis tests

Merge pull request #43 from fire015/develop

Removed data type validation for storing and added param and return types

Update to PHP 7.0 min version, move to PHPUnit 6

Add PHP 7.3 to travis tests

Merge pull request #40 from fire015/add-php-72-to-travis