bug: return single result instead of iterating

[krushiraj]

This bug can be reproduced when we try to download records from ArXiv on 2021-10-09. This happened earlier for a couple of times.

Issue is that the response has only one record and instead of having a single object in array it return the single object itself.

[krushiraj]

@andrenarchy please review the changes and let me know if this is good or post your thoughts on a fix for this issue.

[krushiraj]

Gentle reminder to have a look at this PR. :)

[gleachkr]

Hi - I'm using this library and hitting the same bug. It'd be lovely to have this merged.

[krushiraj]

I realised this is a duplicate of #30 and that is a better fix. So closing this in it's favour.

PS: For whoever needs a fix immediately fork this repo with the fix and use the repo under you account as dependency. You can get back to this if they merge in future

If you are not familiar on how to add a git repo as dependency - https://stackoverflow.com/questions/23210437/npm-install-private-github-repositories-by-dependency-in-package-json