ketchup status changes

[PeterKraus]

This PR closes #32:

• ketchup status <jobid> accepts multiple jobids both as a comma- or space-separated list
• ketchup status <jobid> returns a yaml list of job info
• ketchup submit <jobfile> returns a single yaml job info
• ketchup search <jobname> returns a yaml list of job info

[PeterKraus]

@lorisercole Please have a look and let me know what you think. I don't think I want to implement ketchup status queue -a, as you can already list all jobs (including completed) using the verbose switch: ketchup status queue -v. Although neither ketchup status state nor ketchup status queue will print a yaml-formatted output.

[lorisercole]

Thanks @PeterKraus! I tried it out, it looks nice!

I just noticed one thing, that is not related to this PR though:
If I submit an old version payload (0.1), I get this:

WARNING:dgbowl_schemas.tomato:Could not parse 'kwargs' using Payload v0.2.
WARNING:dgbowl_schemas.tomato:1 validation error for Payload
version
  unexpected value; permitted: '0.2' (type=value_error.const; given=0.1; permitted=('0.2',))
jobid: 29
jobname: null

Is that expected?

[PeterKraus]

It's expected, as ideally you'd want folks to use the newest version of the payload, but I should perhaps drop it from a WARNING to INFO. I've made an issue over on the other repo: dgbowl/dgbowl-schemas#13

[PeterKraus]

@lorisercole: I'll merge this after our test today.

[lorisercole]

Hey @PeterKraus,
could you possibly add a tag to this new version of the code (e.g. 0.2a2)?
I'll refer to it in aiida-aurora: I have just updated the scheduler module to parse the new format.
Thanks

[PeterKraus]

@lorisercole: done - https://github.com/dgbowl/tomato/releases/tag/0.2a2