Deprecate old system, still in use by WG/CB

worldedit-core/src/main/java/com/sk89q/minecraft/util/commands/CommandsManager.java

@@ -60,6 +60,7 @@ import java.util.Set;
  * @param <T> command sender class
  */
 @SuppressWarnings("ProtectedField")
+@Deprecated
 public abstract class CommandsManager<T> {
 
     protected static final Logger logger =

worldedit-core/src/main/java/com/sk89q/minecraft/util/commands/package-info.java

@@ -0,0 +1,24 @@
+/*
+ * WorldEdit, a Minecraft world manipulation toolkit
+ * Copyright (C) sk89q <http://www.sk89q.com>
+ * Copyright (C) WorldEdit team and contributors
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by the
+ * Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/**
+ * This package contains the old command system. It is no longer in use. Please switch
+ * to Piston, Intake, ACF, or similar systems.
+ */
+package com.sk89q.minecraft.util.commands;