The readme in http://lowelab.ucsc.edu/software/tRNAscan-SE.tar.gz notes that there is a newer version since 3 years: Current release: 1.3.1 (January 2012) Reproducible: Always
+*trnascan-se-1.31 (08 Jan 2015) + + 08 Jan 2015; Justin Lecher <jlec@gentoo.org> -trnascan-se-1.23-r1.ebuild, + +trnascan-se-1.31.ebuild, +files/trnascan-se-1.31-ldflags.patch, + metadata.xml: + Version BUmp, #532460 +