Extensions for Synthetic Controls Analysis

Extensions to the synthetic controls analyses performed by the package 'Synth' as detailed in Abadie, Diamond, and Hainmueller (2011) . Includes generating and plotting placebos, post/pre-MSPE (Mean Squared Prediction Error) significance tests and plots, and calculating average treatment effects for multiple treated units. This package represents an implementation of those methods suggested in Abadie, Diamond,and Hainmueller (2010) for use in Synthetic Control Analysis.