Add option to output json format reports

[LucoDevro]

• Does not fix an open issue: it adds functionality
• description of feature/fix

Json files are easier to parse for automated high-throughput applications. Since this output option was silently supported in the API, I exposed it via a Boolean flag.

• tests added/passed

All tests passed (make qa).

• add an entry to the next release

[Midnighter]

Hi @LucoDevro,

Thank you for the contribution. I agree that this is very useful. It's been on my mind for years now, but I only get to work on memote in my spare time. I've held off on making this available so far, because I thought it would not be that useful without also offering a solution to load JSON files and creating a report from that.

Do you have a use just for this part already?

[LucoDevro]

I'm setting up a high-throughput curation workflow and memote nicely puts together some tests. At some point, I needed to get the identifiers of the flagged reactions of course, and those are easier to get from a json than from an html.

[Midnighter]

In that case, please also take a look at https://github.com/opencobra/jeweler which is a nextflow pipeline for running memote on many samples.

[LucoDevro]

Thanks for the suggestion!