add functions to pull necessary ggplot functions/objects into Xplore namespace for use. Currently all executed from geom.R to allow for package to build properly but want to move ggint to load with package using .onLoad but not currently working
updates to residuals.R to work more closely to ggplot's quick-plot by taking advantage of ggint pulling necessary functions/objects into local namespace from ggplot2
organize test_residuals for checking plots as build out the residuals function