Improved PHP 8.1 support

Removals:

• Drop php-formatter #420
• Drop box-legacy

larastan

• Lock larastan to version 1.0 until its dependencies are stable #418

twig-linter

Additions:

• twig-linter - Standalone cli twig 3.X linter #417 (thank you @newmedia)

Composer latest

Updates:

• #414
• #416

Lock composer to 2.1.14

Updates:

• #413

PHP 8.1 support

Updates:

• Build on PHP 8.1 #397

phpat on PHP 8

Updates:

• Enable phpat on PHP 8.0 #410

composer-require-checker

Additions:

• composer-require-checker-3 for PHP 7.4 #409

Updates:

• composer-require-checker is now installed in version 4 with no support for PHP 7

phive

Updates:

• Install phive from github releases #408

Drop PHP 7.3

Updates:

• Drop support for PHP 7.3 #407