/**
 *   Spawners - Gather mob spawners with silk touch enchanted tools and the
 *   ability to change mob types.
 *
 *   Copyright (C) 2012 Ryan Rhode - rrhode@gmail.com
 *
 *   This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

This Bukkit plugin uses bergerkiller's BKCommonLib.
It also uses various bits of code I found all over on the Bukkit forums.