Zelig code is in GitHub accessible to all developers:
https://github.com/IQSS/ZeligChoice
https://github.com/IQSS/ZeligMultilevel
https://github.com/IQSS/ZeligNetwork
https://github.com/IQSS/ZeligGAM
https://github.com/IQSS/Zelig-Documentation
Documentation for contributors coming this summer.
