Manual override of citation dates with sources.yaml

[WilliamNgiam]

Firstly, thank you for creating this lab website template, it's been really great.

I had a bit of trouble with the publication dates for the research page – they were not automatically being parsed by Manubot (I think), and then when I followed the documentation for the manual override in sources.yaml, it was leaving the [no date info] in place on the website.

I found the solution was to report the date within in single quotes,date: 'YYYY-MM-DD' -- rather than date: YYYY-MM-DD as suggested by the documentation and in the provided example.

Additional note - In the main lab-website-template repo, the first item in the sources.yaml file has the date written is as date: 2020-12-4, which I think somehow gets updated to the correct date format by citation.html.