TODO List:
    - New option "o" : a destination can be reached from everywhere, whitout being on another destination
    - Refactoring the teleportation System
    - Add a command for update easily restrictions (add restricted dest, remove restricted dest)
    
version 1.9 (2012-01-23):
    - Native Bukkit's Permissions support   
    - Fix destinations case (Bug for Portal Signs)
    - New configuration : auto-save
    - Command /tg del can be used with the option -s to save the data
    - Option -p() can be used "void" to update a destination with the player location
    - New Permissions nodes for each teleportation means (the node "travelgates.portal" has been renamed "travelgates.teleportportal")
    - Permission node "options" has been renamed "update"
    - New command /tg config : show the current configuration of the plugin (Need messages update)
    - Each command has several aliases
    - New commands for toggle all boolean (true/false) configurations : /tg perms, /tg signtp, /tg portaltp, /tg clearallinv, /tg autosave (Need messages update)
    - Configuration will be saved with /tg save or with autosave (if using toggle commands)
    - Fix the pattern for message variables (numbers not recognized in variables)
    - Fix the restricted destinations check for Nether Portal teleportation
    - Teleport player using Nether Portal from adjacent blocks of the portal (also fix a bug if player not standing on the destination block)
    - New command parameter /tg details <destination> : show only the details of the selected destination
    - Support for the new events system from the RB 1.1-R1
    - New configuration : teleport block
    - Teleportation on teleport blocks which are adjacent to a destination (itself a teleport block)
    - /tg <dest> -f allow teleportation without being on another destination (for admin by default)
    
version 1.8 (2012-01-08):
    - Logger message when players teleport from destination to another
    - Optimization of researches (destination / location / options / restrictions)
    - Add a control when a player is trying to add a Portal sign (Permissions' node is the same as lever : travelgates.sign)
    - Force arrival chunk to be loaded after being teleported, if it is not the case
    - New option -r to restrict destinations from the player's current location (add new messages)
    - Minor fix on /tg loc command (check if destination exists)

version 1.7.1 (2012-01-03):
    - Code clean up. (forgotten debug messages)
    - Add the /tg update command, which is the same as the /tg options command but more convenient
    - Refactoring the readme file

version 1.7 (2012-01-02):
    - Refactoring constants' names
    - Using smart enumeration for permissions nodes
    - New options "p" used to specify manually a Location for a destination when using /tg add or /tg options.
    - New Command /tg worlds to list all available worlds on the server.

version 1.6.3 (2011-12-13):
    - Compatibility with Bukkit's Build [1597]
 
version 1.6.2 (2011-11-05):
    - Option "i" resets the armor when the configuration "clearallinventory=true" is used.
    - New configuration "clearallinventory"
    - New message "ALL_INVENTORY_LOST"
    - Fix a bug on signs : right click without having the node "teleport" makes a message appear
    - Fix the debug mode starting with the configuration (was not enabled everywhere)
    - Added the color of Options Error message

version 1.6.1 (2011-10-22): 
    - Compatibility with the Bukkit's Leet Build [1337]

version 1.6 (2011-10-18):
    - Compatibility with the Bukkit's Build [1317]
    - Compatibility with PermissionsBukkit and PermissionsEx
    - Nodes update & fix (previous nodes with admin/user group nodes seemed to not work...)
    - Better Permissions handling (Auto detection of the Permissions plugin used and force the loading of the Permissions plugin if the order of plugins is wrong) 
    - New configuration paramater : "debug" used to set the debug mode at the beginning of the plugin. (useful to debug the plugin's loading)
    - Fix the commands /tg loc and /tg options while using them with no destination (no message before, now help message)
    - Better /tg help message.

version 1.5.1 (2011-10-09):
    - Fixing NullPointerException occuring when using Permissions

version 1.5 (2011-10-09):
    - Substitution of Nether Portals using TravelGates's Sign
    - Minecraft Logger is used instead of System.out/err
    - Ingame debug mode with /tg debug
    - Config teleport modes (choice between sign and/or portals)
    - Teleportation on Sign is more permissible (See the README for more information)
    - No-Message improvement (the searched message is displayed)
    - Better configuration file managment
    - Messages update (new messages, language file update needed)

version 1.4 (2011-09-29):
    - Vertical view position is ignored when setting a destination (always facing the horizon)
    - The sign used to teleport a player can be filled on any lines
    - A default message is sent if no message has been found 
    - Save command : /tg save -> force destinsions save
    - Options update command : /tg options <desination> -[options]

version 1.3 (2011-09-28):
    - Fix the Permissions issue
    - Minor update on the message "variable" system. 
    - Switch the meaning of the "i" option (i = clear inventory instead of saving it)
    - Now teleport player on the destination's bloc center
    - New option "a" : means only OP's can use this gate (or Permissions' admins)
    - New option "s" : means that after adding the new destination, all destinations will be saved

version 1.2 (2011-09-25):
    - Configuration file
    - Permission compatibility
    - Multilangual messages system
    - Details command displays options
    - System log messages are in English
    - Disable all plugin actions if loading has failed

version 1.1 (2011-09-24):
    - Compatibility to Bukkit build #1185
    - Internal minor changes (constants, messages)

version 1.0 (2011-09-16):
    - Initial build
    - All texts are in French