v.0.3.1

• Includes new mutationPlot function to create mutation plots that visualize variant-level and gene-level association results along a transcript structure. Optionally, custom tracks such as protein domains or mutation clusters can be overlaid.
• The mutationPlot function is demonstrated in the updated spatial clustering tutorial.
• Includes a new method getRanges for varSetList and varSetFile that retrieves genomic ranges for variant sets. Can be used to retrieve either genomic coordinates or other user-defined coordinates such as CDS coordinates genearated with the mapCDS method.