Incrementing version to 2.16
Updating Vault version to 1.2.29
Changing player.disable_stats to player.enable_stats and defaulting to true in the config.yml
Taking a granular approach to config migration to support changes over time
PlayGrid group support is now disabled by default, requiring admins to explicitly declare PlayGrid as the authoritative group manager.
Increment bukkit, craftbukkit and stats dependency versions