gtruby: add some more attribute modifier methods
gtlua: take care of double->integer conversions

Closes #313.
add gt_grep_nt()
do not create temp copies of descriptions while searching
add -matchdescstart and associated library code
add tests
add some more type fixes
gtlua: add support for -matchdescstart
wording
wording
gtlua: require a string to be translated to be at least one codon long
do not apply spec checking to pseudo-nodes
maintain traversal stack properly
add truthiness/falsiness matchers
improve example specfile, allow split CDS
add `-failhard' option
remove redundant duplicated includes
chomp blanks after seqids
add test file
Merge pull request #319 from satta/chomp_seqid

chomp blanks after seqids