Apply fixes from StyleCI

add php 7.3 back to tests, seeing as Laravel still supports it as min…

…imum for now

PHP 8 support

Merge pull request michaeldyrynda#17 from bumbummen99/patch-1

Laravel 8

Merge pull request michaeldyrynda#15 from jamesmills/patch-1

Updating Treeware link URL's

update README

Apply fixes from StyleCI

[skip ci] update version in readme

Merge pull request michaeldyrynda#8 from michaeldyrynda/chore/laravel…

…-5.7-support

Laravel 5.7 support

update readme for 3.0