addTxCounts() : Imports transcript-level counts and calculates normalised gene-level and transcript-level expressions. Will also deduce the splicing efficiencies of alternative exons (PSI values) based on transcript-level expression.testGeneCorr() : Tests the causality of gene expression changes against the splicing of AS-NMD exons to provide insights into the regulatory function of alternative exons.plot2way() : Plots the values from any 2 features as a scatterplot.