Clear and readd match details on every load. Closes #162
Check if match is null to prevent AR client crash. Thanks @caske33
Fix memory leak with arrow tracking using WeakHashMap

Thanks @dumptruckman
Standardize yaw/pitch usage in AutoRefRegion and subclasses
Optionally teleport spectators to map. Closes #108
Players become spectators (on by default). Closes #139

config.yml: "players-become-spectators: false" to disable
If disabled, players are sent to lobby (if one exists) or kicked
Only prevent ice before the match starts
Add SPAWNERS_ONLY region flag: no mob spawns, except from spawners

Thanks @TomShar
Load world configuration earlier to avoid NPE
Wait to teleport player for an additional tick. Closes #160

Addresses https://bukkit.atlassian.net/browse/BUKKIT-1331
Reload map in-place with "/ar reload -x". Closes #158
Allow anyone to use "/ar reload" in practice mode. @Keanulaszlo
Updated version to 2.5 for release.
Updated version to 2.6-SNAPSHOT for development.