Added psalm configuration and refined source.

src/Plugin.php

@@ -20,6 +20,9 @@ class Plugin extends Container {
 
 	/**
 	 * @param array $values Configuration values to apply.
+	 *
+	 * @psalm-suppress MixedArgument
+	 * @psalm-suppress MixedAssignment
 	 */
 	public function __construct( array $values = [] ) {
 
@@ -60,6 +63,8 @@ class Plugin extends Container {
 
 	/**
 	 * Start Stopwatch and timing plugin load immediately, then set up core events and needed hooks.
+	 *
+	 * @psalm-suppress MixedAssignment
 	 */
 	public function run(): void {