[Seaside] Seaside 2.8 --> 3.0 questions..

[Rick Flower]

I've got some code I'm just starting to think about moving from
Seaside 2.8 to 3.0alpha5 (ala VW7.7nc).. One package I use has 
extensions for the following classes which do not exist in 
Seaside 3.0 from what I've seen.. For plugging this set of 
extensions into the Seaside 3.0 package, what would be a 
good set of classes to start looking through?

Seaside 2.8 classes used..
===========================
WACollectionTag
WACompound
WAFormInputTag
WATagBrush

Thanks!