CHANGES IN tufte VERSION 0.12

Fix footnotes as sidenotes issue with Pandoc 2.15 and later (thanks, @MCMaurer, #108).

CHANGES IN tufte VERSION 0.11

Fix an issue with Pandoc’s table support in tufte_handout() (thanks, @chrisjake, #104).
Fix an issue with Pandoc’s citation processing by updating latex template (thanks, @rmcd1024, #106).

Fix an issue with the wrong references placed in margins when link-citations: yes is used with Pandoc 2.11+ (#92)

Add the missing CSLReferences environment in the template required by Pandoc 2.11+ and its new citeproc (#89)
tufte_handout() now uses default tidy knitr option, which is FALSE. It can be changed with knitr::opts_chunk$set(tidy = TRUE) and requires in that case the formatR package.

References are now moved in the margin correctly with Pandoc 2.11 (#86).
Add a runningheader variable in the template for tufte_handout() and tufte_book() to have a different running header than the title if provided. (#82)

Arbitrary full width content is supported now; see https://rstudio.github.io/tufte/#arbitrary-full-width-content for the syntax (thanks, @mlovelace @josiekre, #33).

Make references generated by Pandoc >= 2.7 work in the margin (thanks, @dfeng, #64).

Should use the Pandoc argument --top-level-division=chapter instead of --chapters for tufte_book() (thanks, @jtth, #52).
Processing of multi-line footnotes fails with the Pandoc option --wrap preserve (thanks, @aoles, #57 #58).

It is possible to select a subset of some features of the default Tufte style (tufte-css) via the tufte_features argument of tufte_html():
- Disable the et-book fonts.
- Remove the default light-yellow background color.
- Use italics for document headers or not.
A new variant of the Tufte style, envisioned, is added to tufte_html(). You can use tufte_html(tufte_variant = 'envisioned') to enable this style. The major difference with the default Tufte style is: the font family is Roboto Condensed, the background color is #fefefe, and the text color is #222 (thanks, @eddelbuettel, #21).
You can choose whether references from citations should be placed in the document margins or at the bottom using the margin_references argument of tufte_html() (thanks, @stefanfritsch, #49).

When link-citations: no in YAML, citations should not be moved into the page margin in the HTML output (https://stackoverflow.com/q/39053097/559676).
Horizontal lines could bisect margin notes and footnotes (thanks, @ajdamico, #32).
Compatibility issues with Pandoc 2.0 (thanks, @peetCreative, #51).

it is possible to generate PDF output using the ctex package for R Markdown documents in Chinese; you just need to specify ctex: yes in the YAML metadata

the default LaTeX template for tufte_handout() may not work when the LaTeX package soul is installed, or ifxetex/xltxtra are not installed
the number_sections option did not work for LaTeX output

added three output formats for R Markdown: tufte_html(), tufte_handout(), and tufte_book()