Adding new checks, fixing bugs

- Updated Pastebin API
- Added Block (A), (B), (C)
- Added NoFall (A), (B)
- Fixed block placement false positives by fixing the BlockUpdateHandler PacketPlayInBlockPlace bug getting the wrong block location.
- Improved Hitbox check accuracy
- Redid getters and setters for player in Check

src/main/java/dev/brighten/ac/check/Check.java

@@ -15,17 +15,17 @@ import net.md_5.bungee.api.chat.TextComponent;
 
 import java.util.*;
 
-@Getter
 public abstract class Check {
 
-    private final APlayer player;
-
+    public final APlayer player;
+    @Getter
     private final CheckData checkData;
+    @Getter
     private int vl;
     private long lastFlagRun;
     private final Timer lastAlert = new MillisTimer();
 
-    public static List<UUID> alertsEnabled = new ArrayList<>();
+    public static Set<UUID> alertsEnabled = new HashSet<>();
 
     public static final Map<String, List<Tuple<UUID, UUID>>> debugInstances = new HashMap<>();