Declare return types in AniDB class

Changelog

@@ -1,4 +1,5 @@
 2017-04-24 DariusIII
+	* Chg: Declare return types in AniDB class
 	* Chg: Chage some if-else loop logic in TMDB class
 	* Chg: Update lithium, pnotify and composer/installers
 2017-04-23 DariusIII

nntmux/processing/post/AniDB.php

@@ -210,7 +210,7 @@ class AniDB
 	 *
 	 * @return bool
 	 */
-	private function matchAnimeRelease($release = [])
+	private function matchAnimeRelease(array $release = []): bool
 	{
 		$matched = false;
 		$type    = 'Local';