Function to_markdown_with_options 

pub fn to_markdown_with_options(
    blocks: &[Block],
    options: &MarkdownOptions,
) -> String

to_markdown, with the furniture and the page marker as options says.

Preview: output quality is still improving and the API may change in a minor release.

With MarkdownOptions::include_headers the running heads, and with MarkdownOptions::include_footers the page numbers, are written as plain paragraphs at their reading-order position; with PageSeparators::None a change of page writes no marker, and the paragraphs on either side stand separated by a blank line.