Experimental Character/Client Closure + Morph & Crash skills patch

Player Trade is now enabled inside PQ & events.
Refactored minigame code, now using enums rather than strings for logistics.
Fixed Transformations not applying stat buffs properly.
Warrior's Crash skills now acts accordingly with their description (rather than applying all combined debuffs).
Added a server flag for Crash skills, to apply mob immunity debuffs as well.
Fixed Shark Wave not stacking charges.
Dragon Roar now properly stuns the mobs (stun effect won't show up, though).
Refactored empty method on MapleCharacter, now freeing more resources.
[EXPERIMENTAL] Upon lifetime's end of the object, empty function will be called alongside MapleClient's clear, should issues arise from that, it's TBD.

src/constants/CharsetConstants.java

@@ -0,0 +1,48 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+ 
+package constants;
+ 
+/*
+ * Courtesy of GabrielSin (gabrielsin@playellin.net)
+ * Ellin
+ * MapleStory Server
+ * CharsetConstants
+ */
+ 
+public class CharsetConstants {
+   
+    public static MapleLanguageType MAPLE_TYPE = MapleLanguageType.LANGUAGE_PT_BR;
+   
+    public enum MapleLanguageType {
+        LANGUAGE_PT_BR(1, "ISO-8859-1"),
+        LANGUAGE_US(2, "US-ASCII");
+        final byte type;
+        final String ascii;
+ 
+        private MapleLanguageType(int type, String ascii) {
+            this.type = (byte) type;
+            this.ascii = ascii;
+        }
+ 
+        public String getAscii() {
+            return ascii;
+        }
+ 
+        public byte getType() {
+            return type;
+        }
+ 
+        public static MapleLanguageType getByType(byte type) {
+            for (MapleLanguageType l : MapleLanguageType.values()) {
+                if (l.getType() == type) {
+                    return l;
+                }
+            }
+            return LANGUAGE_PT_BR;
+        }
+    }
+}