gnomeR 1.2.0

• Updated color palette functionality
• Column with sample ID now returned in data frame resulting from create_gene_binary()
• summarize_by_gene() function was changed to run faster (#259)
• subset_by_frequency() added to allow users to filter for specific prevalence levels of mutations/alterations/fusions (#270)
• Removed oncoKB functionality (moving to {oncokbR} package)
• Fixed bugs in tbl_genomic() and create_gene_binary().
• Added data processing tutorial vignette