annotate_loci: Generate transcript annotations
In CshlSiepelLab/nascentRNASim:

Generate a GRanges-class of transcript annotations from a variety of inputs describing the loci, the archetypes, and their relative offsets

annotate_loci(
  ta,
  tx_archetypes,
  tx_fiveprime_dist,
  loci_gaps,
  loci_strands,
  telomere_buffer,
  seq_info
)

`ta`	a transcript_archetypes-class object
`tx_archetypes`	a list of which transcript archetypes go to each locus grouped by locus
`tx_fiveprime_dist`	a list of transcript offsets from 5' end of the locus grouped by locus
`loci_gaps`	a vector of offsets between loci
`loci_strands`	a vector of the strandedness of each loci
`telomere_buffer`	regions at the head and tail of each chromosome that do not contain transcripts
`seq_info`	a `seqinfo` object used to determine chromosome lengths