Added optional economy support! Charge or pay players for how long they fly, to enable / disable flight mode, and to start / stop flying.
Soft depends on the Vault plugin. Required for economy support, but FlightControl will work just fine without it.
Supports the new player UUID system; no longer depends on deprecated code.
Added control over sprint-flying.
Now optionally ignores players in Creative mode, so as not to mess around with their flying.
Added haste control, so that players can break blocks faster while they are flying.
Beta release: Ready for testing out in the real world!
Control over sprint flying is buggy at the moment because Bukkit does not correctly cancel PlayerToggleSprintEvent events. There is nothing to do except to wait for them to fix it.
