(not sure if this should be in support or feature requests)
When creating .bib entries from papers, if I have a Website article type, it is currently export as an @MISC type in the .bib - is it possible to use biblatex field types that are much more flexible (and not to mention, current)?
Yes, this would be very nice! The @online entrytype with url and urldate makes way more sense than @misc with howpublished + note.
As a quick work around, exporting urldate for @misc as YYYY-MM-DD would already be quite useful, because currently I need the following sourcemap to clean up my bib file (in the note the dates are saved as YYYY-M-D, so you need to do some tinkering to get YYYY-MM-DD):
\DeclareSourcemap{
\maps[datatype=bibtex]{
% convert paperpile misc to online structure (url + urldate)
\map[overwrite]{
\pertype{misc}
% if url is present delete howpublished
\step[fieldsource=url, final]
\step[fieldset=howpublished, null]
% if note is present, extract date from note, and construct urldate
\step[fieldsource=note, match=\regexp{([0-9]{4})-([0-9]{1,2})-([0-9]{1,2})}, final]
%% prepend zeros
\step[fieldset=urldate, fieldvalue={$1-0$2-0$3}]
%% remove if prepending resulted in too many zeros
\step[fieldsource=urldate, match=\regexp{([0-9]{4})-0?([0-9]{2})-0?([0-9]{2})}, replace={$1-$2-$3}]
%% delete note
\step[fieldset=note, null]
}
}
}