Bukkit

-Numeric IDs can now be used to specify materials.
-Multiple IDs can be put on a single sign, separated by commas (example: 1,4,98). Only ID's work for this, not names. (names are too long anyway)
-Custom material groups can be specified in the config file. These are like predefined lists of multiple id's under a simple name. An example group is provided so you can see the syntax.
-There is now a command to sort your entire inventory into a network: /autosort [netName]
-Permissions for both creation of sort signs and the above command (autosort.create , autosort.autosort)
-Drop chests: Placing a sort sign above a chest with no specified material designates that chest as a drop chest. You can place items into this chest and they will be sorted into the network.
-Many notifications to tell you when you've done something wrong
-Switched to new Bukkit event system

- (OLD) Double-chests are registered in halves: two signs are needed to mark an entire double-chest. (Not sure if I should keep this as a feature)