Hammerhead ribozyme

[jakebeal]

It would be good to have a glyph for self-cleaving hammerhead ribozymes. There is an "handlebars" shape that I have sometimes seen in talks that might do well.

[jakebeal]

Closing for now; we may wish to revisit the issue with regards to a more general functional RNA language in the future.

[jakebeal]

SeqeneceOntology now has a self-cleaving ribozyme term, which may be useful here: http://www.sequenceontology.org/browser/current_release/term/SO:0002231

[jakebeal]

Still likely to become superseded by #79