added mirna files from plx02, inc mature mirnas for mirbase
modified expressed_mature_for_mirbase.fa to mask sequences for most common isomirs: maskFastaFromBed -soft -fi expressed_stem_loops.fa -bed most_freq_expressed_isomirs.bed -fo expressed_mature_for_mirbase.fa
Merge github.com:janepipistrelle/turkey_miRNAs