v1.3.0

1.2.0 -> 1.3.0
o Fixed a bad memory leak in boundary.c
o Fixed bug with selenocysteines in query sequences
o Fixed bug with subsequence creation (and --ryo problems)
o Fixed a bug with transition mapping in reduced space alignments
o Removed variable_submat to fix bugs with codegen and allow speed ups
o Fixed bug with --usetlaaa and translated models
o Fixed emit calculation in HPair for BSDP
o Added C field to vulgar for disambiguation of codon matches
o Fixed bug with region finding in exhaustive DP codegen
o Fixed GFF bugs (start always < end) and off-by-one bug on rev strand
o Fixed bugs with codegen for cd2g
o Fixed bug with chained silent transitions in reduced space traceback
o Fixed bug broken bigseq comparisons
o Fixed --percent and --bestn ungapped comparisons