updated to handle non-chr seqs, old miRbase IDs, retired transcript re-assignment, NR miRNA features, lots of counting
updated to handle non-chr seqs, old miRbase IDs, retired transcript re-assignment, NR miRNA features, lots of counting

Ensembl/ensembl-funcgen,Ensembl/ensembl-funcgen,Ensembl/ensembl-funcgen,Ensembl/ensembl-funcgen