[Bleeding] Changed event system into a new, much faster design. Huge thanks to @zml2008 & @lahwran.

By: Nathan Adams <dinnerbone@dinnerbone.com>

paper-api/src/main/java/org/bukkit/event/server/MapInitializeEvent.java

@@ -1,6 +1,7 @@
 package org.bukkit.event.server;
 
 import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
 import org.bukkit.map.MapView;
 
 /**
@@ -8,6 +9,7 @@ import org.bukkit.map.MapView;
  */
 @SuppressWarnings("serial")
 public class MapInitializeEvent extends ServerEvent {
+    private static final HandlerList handlers = new HandlerList();
     private final MapView mapView;
 
     public MapInitializeEvent(MapView mapView) {
@@ -23,4 +25,13 @@ public class MapInitializeEvent extends ServerEvent {
     public MapView getMap() {
         return mapView;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/server/PluginDisableEvent.java

@@ -1,5 +1,6 @@
 package org.bukkit.event.server;
 
+import org.bukkit.event.HandlerList;
 import org.bukkit.plugin.Plugin;
 
 /**
@@ -7,7 +8,17 @@ import org.bukkit.plugin.Plugin;
  */
 @SuppressWarnings("serial")
 public class PluginDisableEvent extends PluginEvent {
+    private static final HandlerList handlers = new HandlerList();
     public PluginDisableEvent(Plugin plugin) {
         super(Type.PLUGIN_DISABLE, plugin);
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/server/PluginEnableEvent.java

@@ -1,5 +1,6 @@
 package org.bukkit.event.server;
 
+import org.bukkit.event.HandlerList;
 import org.bukkit.plugin.Plugin;
 
 /**
@@ -7,7 +8,17 @@ import org.bukkit.plugin.Plugin;
  */
 @SuppressWarnings("serial")
 public class PluginEnableEvent extends PluginEvent {
+    private static final HandlerList handlers = new HandlerList();
     public PluginEnableEvent(Plugin plugin) {
         super(Type.PLUGIN_ENABLE, plugin);
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/server/PluginEvent.java

@@ -6,7 +6,7 @@ import org.bukkit.plugin.Plugin;
  * Used for plugin enable and disable events
  */
 @SuppressWarnings("serial")
-public class PluginEvent extends ServerEvent {
+public abstract class PluginEvent extends ServerEvent {
     private final Plugin plugin;
 
     public PluginEvent(final Type type, final Plugin plugin) {

paper-api/src/main/java/org/bukkit/event/server/ServerCommandEvent.java

@@ -2,12 +2,14 @@ package org.bukkit.event.server;
 
 import org.bukkit.command.CommandSender;
 import org.bukkit.command.ConsoleCommandSender;
+import org.bukkit.event.HandlerList;
 
 /**
  * Server Command events
  */
 @SuppressWarnings("serial")
 public class ServerCommandEvent extends ServerEvent {
+    private static final HandlerList handlers = new HandlerList();
     private String command;
     private CommandSender sender;
 
@@ -48,4 +50,13 @@ public class ServerCommandEvent extends ServerEvent {
     public CommandSender getSender() {
         return sender;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/server/ServerEvent.java

@@ -6,7 +6,7 @@ import org.bukkit.event.Event;
  * Miscellaneous server events
  */
 @SuppressWarnings("serial")
-public class ServerEvent extends Event {
+public abstract class ServerEvent extends Event {
     public ServerEvent(final Type type) {
         super(type);
     }

paper-api/src/main/java/org/bukkit/event/server/ServerListPingEvent.java

@@ -3,12 +3,14 @@ package org.bukkit.event.server;
 import java.net.InetAddress;
 
 import org.bukkit.event.Event;
+import org.bukkit.event.HandlerList;
 
 /**
  * Called when a server list ping is coming in.
  */
 @SuppressWarnings("serial")
 public class ServerListPingEvent extends ServerEvent {
+    private static final HandlerList handlers = new HandlerList();
 
     private InetAddress address;
     private String motd;
@@ -76,4 +78,13 @@ public class ServerListPingEvent extends ServerEvent {
     public void setMaxPlayers(int maxPlayers) {
         this.maxPlayers = maxPlayers;
     }
+
+    @Override
+    public HandlerList getHandlers() {
+        return handlers;
+    }
+
+    public static HandlerList getHandlerList() {
+        return handlers;
+    }
 }

paper-api/src/main/java/org/bukkit/event/server/ServerListener.java

@@ -5,6 +5,7 @@ import org.bukkit.event.Listener;
 /**
  * Handles all miscellaneous server events
  */
+@Deprecated
 public class ServerListener implements Listener {
 
     /**