Binding improvements

WIP towards deprecating parsers and unifying the command bindings
Allow registering dynamic bindings
- Supports nesting bindings

worldedit-core/src/main/java/com/sk89q/worldedit/internal/command/WorldEditBinding.java

@@ -64,7 +64,7 @@ import java.util.List;
 /**
  * Binds standard WorldEdit classes such as {@link Player} and {@link LocalSession}.
  */
-public class WorldEditBinding extends BindingHelper {
+public class WorldEditBinding {
 
     private final WorldEdit worldEdit;