write_matrices: Make a pretty xlsx file of the various summary statistics and...
In abelew/Rerrrt: Examine RT error rates through sequencing.

This takes the results of create_matrices() and hopefully prints some pretty data about them.

write_matrices(
  retlst,
  excel,
  min_reads = NULL,
  min_indexes = NULL,
  min_sequencer = 10,
  min_position = NULL,
  max_position = NULL,
  max_mutations_per_read = NULL,
  prune_n = TRUE,
  verbose = FALSE
)

`retlst`	Result from create_matrices()
`excel`	Excel filename.
`min_reads`	Written to a summary table.
`min_indexes`	Written to a summary table.
`min_sequencer`	Written to a summary table.
`min_position`	Written to a summary table.
`max_position`	Written to a summary table.
`max_mutations_per_read`	Written to a summary table.
`prune_n`	Written to a summary table.
`verbose`	Print!