Feature Request: Export to Cadnano

[mattaq31]

Hi,

First of all, this tool is great, all the combined 2D/3D features make it a significant improvement over Cadnano! Thanks for open-sourcing this for the community!

I have a feature request - Importing Cadnano files into ENSnano works well, but there doesn't seem to be a way to export back out to the Cadnano json format. This would be especially useful when running Cando (http://cando-dna-origami.org) simulations, which only work with a Cadnano file input. Perhaps you could also implement this to export 1 file per grid in a single system?

Many thanks!