Still in development: Will eventually be an ideal point estimator in Julia

Following the paper by Simon Jackman here: http://www.polmeth.wustl.edu/media/Paper/clint03.pdf

Function exists in R in package "pscl" at http://cran.r-project.org/web/packages/pscl/pscl.pdf

Questions:

1. Why is the legislator search function in the Open States API unable to filter by term?
2. How should we initialize NA values in the roll call matrix?
3. Is a DataFrame the best way to create the roll call matrix, especially if we need to add legislators later?