Backpack initial release.

Has no permissions or blacklisting yet or upgrading yet. Gives everyone 9
slots and allows anyone to view anyone. Simply a "proof of concept"
release that shows Backpack is possible for Spout and 10x better than its
Bukkit predecessor.
Signed-off-by: Chris Sanders <zidane@outlook.com>
Version bump towards next milestone.
Signed-off-by: Chris Sanders <zidane@outlook.com>