The ToDo addon is a replacement for the Quest Watch frame allowing you to monitor pretty much any combination of quests (including those without "objectives"), objects, and mobs you care to be alerted to. For instance, you could set a quest of "get 20 arcane powder and kill 5 squirrels". Whatever you want.
0.23 is updated for WotLK.
There are some bugs since 2.3, but I'm working on them, really! But yes, I know that it's not good about recognizing when you kill things for custom-made quests.