Modified for TBC (2.4.3) from Voidmenull's vanilla Storyline remake.
Original addon: https://github.com/Ellypse/Storyline
Remake for vanilla (1.12.1): https://github.com/Voidmenull/VanillaStoryline
Backport for WotLK (3.3.5a): https://github.com/shadovvs/WotLK-Storyline
Backport for Cataclysm (4.3.4): https://github.com/Lanrutcon/Backport-Storyline
