Remove PHPUnit 7 and 8

PHPUnit 9 supports all the PHP versions that we need. Also update
the PHPUnit config schema.

Raise minimum PHP version to PHP 7.4

Drop phpstan from composer.json

It does not support PHP 7.1, so we should not include it
unconditionally.

Fix some phpstan warnings

Remove phpunit 6.5

With the minimum version raised to PHP 7.1, there should be no
more need for PHPUnit 6.

Add json and ctype as required extensions in composer.json (#864)

Drop support for running on PHP 7.0

Target PHP-Parser 5.0

Release PHP-Parser 4.9.0

Add support for throw expression

Release PHP-Parser 4.8.0

Update php-yacc, remove unused tokens

Allow PHPUnit 9

Added missing entry to change log and correct next version indicator (#685)

* Added missing entry to change log and correct next version indicator

* Update composer.json

Fixed branch alias

Release PHP-Parser 4.3.0

Update php-yacc dependency

This version has fixed error handling.

Default to using php-yacc to generate the parsers

Make compatible with PhpUnit 8

updates via "rectorphp/rector" (#573)

- "global" -> remove unused "use" statements
- "phpunit" -> fix "@covers" comments
- "phpunit" -> replace "->will($this->returnValue()" with "->

updates via "rectorphp/rector" (#573)

- "global" -> remove unused "use" statements
- "phpunit" -> fix "@covers" comments
- "phpunit" -> replace "->will($this->returnValue()" with "->willReturn()"
- "UseTest.php" -> add missing namespace
- "composer.json" -> use "autoload-dev"
- remove -> "require_once" usage in the tests (use autoload-dev via composer.json)

-> most of the changes are done automatically by "https://github.com/rectorphp/rector"

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Enhancement: Normalize composer.json

Bump version to 4.2.0-dev

Mark PHP 7.3 as supported

Also bump version to PHP-Parser 4.1.

Support PHPUnit 7

Bump phpunit version (#381)