Updates spotless and adds a license header.

src/main/java/com/majinnaibu/bukkitplugins/metropolis/PlayerLookup.java

@@ -1,19 +1,36 @@
+/*
+This file is part of Metropolis.
+
+Metropolis is free software: you can redistribute it and/or modify
+it under the terms of the GNU Affero General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+Metropolis is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU Affero General Public License for more details.
+
+You should have received a copy of the GNU Affero General Public License
+along with Metropolis. If not, see <https://www.gnu.org/licenses/agpl-3.0.txt>.
+*/
+
 package com.majinnaibu.bukkitplugins.metropolis;
 
 import org.bukkit.entity.Player;
 
 final class PlayerLookup {
-	private PlayerLookup() {}
+  private PlayerLookup() {}
 
-	static Player findOnline(String requestedName, Iterable<? extends Player> onlinePlayers) {
-		if (requestedName == null) {
-			return null;
-		}
-		for (Player player : onlinePlayers) {
-			if (requestedName.equalsIgnoreCase(player.getName())) {
-				return player;
-			}
-		}
-		return null;
-	}
-}
+  static Player findOnline(String requestedName, Iterable<? extends Player> onlinePlayers) {
+    if (requestedName == null) {
+      return null;
+    }
+    for (Player player : onlinePlayers) {
+      if (requestedName.equalsIgnoreCase(player.getName())) {
+        return player;
+      }
+    }
+    return null;
+  }
+}