- use a new structure to hold talent group data which will eventually replace the old master branch implementation
- added support for unlocking dual talent specialization and switching specs
- added basic support for learning and resetting talents
* Core/PacketIO: Update to 4.4.0.53627
* Core/IO: Remove duplicate declaration of PetSpellDataID
* Core/IO: Assign STATUS_UNHANDLED to some azerite packets