Upgraded PuC version

plugin-update-checker-5.4/load-v5p4.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace YahnisElsts\PluginUpdateChecker\v5p4;
+
+use YahnisElsts\PluginUpdateChecker\v5\PucFactory as MajorFactory;
+use YahnisElsts\PluginUpdateChecker\v5p4\PucFactory as MinorFactory;
+
+require __DIR__ . '/Puc/v5p4/Autoloader.php';
+new Autoloader();
+
+require __DIR__ . '/Puc/v5p4/PucFactory.php';
+require __DIR__ . '/Puc/v5/PucFactory.php';
+
+//Register classes defined in this version with the factory.
+foreach (
+	array(
+		'Plugin\\UpdateChecker' => Plugin\UpdateChecker::class,
+		'Theme\\UpdateChecker'  => Theme\UpdateChecker::class,
+
+		'Vcs\\PluginUpdateChecker' => Vcs\PluginUpdateChecker::class,
+		'Vcs\\ThemeUpdateChecker'  => Vcs\ThemeUpdateChecker::class,
+
+		'GitHubApi'    => Vcs\GitHubApi::class,
+		'BitBucketApi' => Vcs\BitBucketApi::class,
+		'GitLabApi'    => Vcs\GitLabApi::class,
+	)
+	as $pucGeneralClass => $pucVersionedClass
+) {
+	MajorFactory::addVersion($pucGeneralClass, $pucVersionedClass, '5.4');
+	//Also add it to the minor-version factory in case the major-version factory
+	//was already defined by another, older version of the update checker.
+	MinorFactory::addVersion($pucGeneralClass, $pucVersionedClass, '5.4');
+}
+