Prepare release

Author: sebastianbergmann

composer.json

@@ -20,7 +20,6 @@
  "issues": "https://github.com/sebastianbergmann/phpunit/issues"
  },
  "prefer-stable": true,
- "minimum-stability": "dev",
  "require": {
  "php": "^7.2",
  "ext-dom": "*",

src/Runner/Version.php

@@ -33,7 +33,7 @@ public static function id(): string
  }
 
  if (self::$version === null) {
- $version = new VersionId('8.0', \dirname(__DIR__, 2));
+ $version = new VersionId('8.0.0', \dirname(__DIR__, 2));
  self::$version = $version->getVersion();
  }