it's broken, nobble it until its extra feature is implemented in show_sequence_set or this is fixed.
it's broken, nobble it until its extra feature is implemented in
show_sequence_set or this is fixed.

but before that, made some usability improvements for people who don't
have -first and -last values to hand.

Ensembl/ensembl-pipeline,Ensembl/ensembl-pipeline,Ensembl/ensembl-pipeline