Added support for UUID-based player lookups in 1.7.5+

You could argue that ShadowRanger's conversion of everything to UUID is better, but that would result in us having to contact Mojang's servers simply to fetch a player by UUID for versions < 1.7.5. It seems excessive (not to mention that uncached contact can result in rate limiting) when the server itself will not remember who they are across name changes. If they can re-obtain everything in their inventory, they can re-run /ac.

v1_5_R3/src/main/java/com/lishid/openinv/internal/v1_5_R3/PlayerDataManager.java

@@ -59,4 +59,14 @@ public class PlayerDataManager implements IPlayerDataManager {
         return player.getName();
     }
 
+    @Override
+    public OfflinePlayer getPlayerByID(String identifier) {
+        OfflinePlayer player = Bukkit.getOfflinePlayer(identifier);
+        // Ensure player is a real player, otherwise return null
+        if (player == null || !player.hasPlayedBefore() && !player.isOnline()) {
+            return null;
+        }
+        return player;
+    }
+
 }