A simple interface to build designs using the package 'DeclareDesign'. In one line of code, users can specify the parameters of individual designs and diagnose their properties. The designers can also be used to compare performance of a given design across a range of combinations of parameters, such as effect size, sample size, and assignment probabilities.
regression_discontinuity_designer()to allow for setting variance and shape of potential outcomes functions
importFromto fix notes and errors in