Twig 3.12 compat

What's Changed

• fix twig 3.12 compat with failing to detect default function by @sserbin in #53
• Update vimeo/psalm requirement from ^4.7 to ^5.8 by @dependabot in #50

Full Changelog: 3.1.0...3.1.1

Chore: deps update

• allow phpunit 9
• require symfony/console and symfony/finder ^5.4|^6.1 (v4 is no longer supported) thanks @xvilo for contributing

Improved php8 compatibility (in composer non-dev mode)

Replaces ocramius/package-versions with composer/package-versions-deprecated
#25 thanks @qrazi for reporting

Drop EOL PHP versions support (<7.4)

This release ends support for unsupported PHP versions (7.2 and 7.3)
PHP 7.4 + or 8.0+ are required

PHP8 support

• php8 support thanks to @jDolba
• chore: psalm update

Support v5 symfony/console and symfony/finder

• Support v5 symfony/console and symfony/finder #8 thanks to @hsegnitz

Twig v3 support

• Twig 3 support (thanks to @xvilo )
• bumped min required php version from 7.1 to 7.2 (breaking change)
• 7.4 on travis tests

1.0.2 refix

Fixed #5

Maintenance release

• deps update (psalm to recent ^3.4, phpunit to either 7 or 8)
• add php 7.3 to travis config

Stub env bugfix (#2)

Fixes #2

• do not stub twig's builtin filters/tests/functions - builtins should now emit proper errors when used improperly;
• fixed noop not working with nullary functions (it was expecting at least an unary one);