spliced sequence extraction

[daler]

xref mdshw5/pyfaidx#127

[ewallace]

Hi Ryan,
I'm just hand-implementing a version of this myself. It would be more sensible to join forces and see if I can accelerate a well-tested version within gffutils.

Where are you at, how can I help?
Edward

[daler]

Thanks @ewallace. This issue has been lower priority across my projects, so unfortunately I haven't made any progress. It would be great if you could add something to gffutils, and I'd be happy to help integrate and test.