[World]

- Guard no longer stacks with detaunts.
- Channels no longer continue when the caster is dead.
- Pets will once again use abilities in Aggressive stance.
- Fixed an issue allowing use of Talisman-equipped gear in T1 while debolstered.
- Deaths from fall damage and Guard will be broadcast in the RvR tracker where appropriate.
- Some optimisations to the packet system.