Support for CSDB Linear Code

[tomdstanton]

Hi @mobiusklein, thanks for developing such a great package!
It has been really useful in my work so far.

I am currently working with some glycan structures from CSDB which are in CSDB linear code. This format is quite similar to IUPAC Condensed linear code, but a bit richer and allows for some fuzziness.

I wondered if you would consider support for parsing this format in the io module any time soon?

Thanks in advance,
Tom

[mobiusklein]

CSDB appears to be relatively complex, compared to IUPAC, even before you include the combinatorial machinery. I also do not see clear examples for N-acetylated monosaccharides? I will need to research the format further before I can say how soon I could write a parser for the format as this project is essentially in maintenance mode.

If you have some more information on the format, or know of another tool that does support it, I can try to use that as a point of reference.