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/tools/data/output/GenericLittleEndianWriter.java

@@ -23,6 +23,7 @@ package tools.data.output;
 
 import java.awt.Point;
 import java.nio.charset.Charset;
+import constants.CharsetConstants.MapleLanguageType;
 
 /**
  * Provides a generic writer of a little-endian sequence of bytes.
@@ -32,7 +33,7 @@ import java.nio.charset.Charset;
  * @since Revision 323
  */
 public class GenericLittleEndianWriter implements LittleEndianWriter {
-    private static Charset ASCII = Charset.forName("US-ASCII");
+    private static Charset ASCII = Charset.forName(MapleLanguageType.LANGUAGE_US.getAscii());
     private ByteOutputStream bos;
 
     /**