Allow multiple sources per tab

[Olivia-Box-Power]

Allow users to supply a list of data sources rather than a character vector, so that it is possible to have more than one source per tab.

[matt-dray]

Aha, so the sources column in the aftables-class data.frame object ends up being a listcol. Would also need to update the code that calculates the row number where 'pre-table metadata' and the data table should be placed.

For anyone reading in the interim, a current 'hack' would be to add additional sources into the custom_rows argument, I suppose, since the custom rows are placed above the source statement in each tab of data in the spreadsheet.

Bigger picture: in create_aftable(), is specifying by content item (tab titles, sheet types, etc) rather than by sheet (cover, content, notes, table 1, etc) the best design choice? Other ideas: {a11ytables2} tries programmatically building the workbook tab by tab; {yamlsheets} specifies all inputs via a text file (with no sense of a 'custom rows' object).

[Olivia-Box-Power]

Thanks @matt-dray. Yes, I got this to work by using custom_rows so not too big an issue.