Fixing a bug that wasn't merging options in for the ViennaRna::Utils graph generation code.
GC content and shorthand to make an RNA('GGGGGCCCCC')
RNA('GGGGGCCCCC').run(:fold) == ViennaRna::Fold.run(ViennaRna::Rna.init_from_string('GGGGGCCCCC')), look at all the characters you just saved.