Added integration to the csppData package allowing use of the most recent CSPP data (2.4)
Fixed a bug, minor improvements
Added a new function, plot_panel, that visualizes the data from the package.
Edited the existing get_cspp_data function to include a new argument (core) that allows users to merge a set of common variables into the result of their search request regardless of whether it matches those variables.
Added integration with csppData, a package we created to hold the Correlates of State Policy Project data and codebook.