Fixed restrict_between_reference_positions function to parse X in the cigar_line.
Fixed restrict_between_reference_positions function to parse X in the cigar_line.

etapanari/ensembl-compara,dbolser-ebi/ensembl-compara,danstaines/ensembl-compara,kumarsaurabh20/ensembl-compara,danstaines/ensembl-compara,ckongEbi/ensembl-compara,Ensembl/ensembl-compara,ckongEbi/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara,dbolser-ebi/ensembl-compara,etapanari/ensembl-compara,Ensembl/ensembl-compara,etapanari/ensembl-compara,kumarsaurabh20/ensembl-compara,ckongEbi/ensembl-compara,Ensembl/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara,kumarsaurabh20/ensembl-compara,danstaines/ensembl-compara,Ensembl/ensembl-compara,kumarsaurabh20/ensembl-compara,Ensembl/ensembl-compara,etapanari/ensembl-compara,dbolser-ebi/ensembl-compara