committing intermediate state of module before rewriting it to use lightweight feature object for caching

feature itself does not transform cleanly and the co-ordinates of the
transformed gene are inferred from the transformed transcripts/exons.

FlyBase genes which have names

Now use API rather than direct SQL. Creates a transcript attribute for each frameshift intron, the value of the attribute being the number of the intron in the transcript, starting from 1.

sequences