Styling advice on layout for tables and graphs, which package is the best?

[mara]

See also this thread

Output Nice-Looking Formatted Tables

When I am generating output from an R Markdown document, I often want to output a table of numbers. The suggestions for formatting tables in the Markdown cheatsheet all seem to be geared at model-output or statistical result-type tables. That's not what I need. What I am looking for is a "presentation-friendly" table. More of a business application. Something that makes it easy to define the format of each column (decimal places, commas, % signs, date formats, etc.) and that lets me define the borders (existence, size, colour) and shading of the tables and its cells. And the width of the table. A typical example would be a table with 4 columns: Year/Quarter, Count, Amount, Percentage Cha…