Zelig 5, 4, and 3

Zelig is one of the R packages that I use routinely. The most recent version is Zelig 5, which uses the new "reference class" OOP model, looks promising. But it does not support all the models the earlier versions supported yet and the output cannot be readily processed by the table-making packages, such as xtable, stargazer, and texreg. Zelig 4 has been around for some time but it seems to be more error prone than Zelig 3, which is still my Zelig version of choice for data analysis.