Use RSS to find new papers

[Hoeze]

Is your feature request related to a problem? Please describe.

Querying all papers for updates produces significant load on both client- and server side

Describe the solution you would like

Use RSS to get updated on new papers, e.g. for PubMed:
https://www.nlm.nih.gov/pubs/techbull/ja20/ja20_pubmed_updated.html

This way, the bot will only have to process newly posted papers (after initial scanning of old ones, if desired).

[VladimirShitov]

Hi @Hoeze ! Thanks for suggesting, this is a great idea. Feel free to contribute if you can help with it :) I'll also try to take a look during the Christmas break