miRBase 22更新没有保留miFam.dat

miFam.dat - family classification of related hairpin sequences

http://www.mirbase.org/blog/2018/03/mirbase-22-release/中回答了miFam.dat没有保留的原因；

the data ‘miFam.dat’ seemed also not-existed, no need ?
We haven’t rebuilt the family classification for miRBase 22. Partly this is because it wasn’t very good, and partly because we don’t aim to be a family database. We’d like to utilise Rfam instead, which is an RNA family database. That might take a little while, so we’ll think about an interim solution.