update date, man page, README.

1 files changed, 102 insertions, 92 deletions

diff --git a/README.md b/README.md
index 2c76e0bb5..28e3e4bc0 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,8 @@ README.template and MANUAL.txt via the command:
 pandoc --lua-filter tools/update-readme.lua README.template -o README.md
 -->
 
-# Pandoc
+Pandoc
+======
 
 [![github
 release](https://img.shields.io/github/release/jgm/pandoc.svg?label=current+release)](https://github.com/jgm/pandoc/releases)
@@ -19,7 +20,8 @@ tests](https://github.com/jgm/pandoc/workflows/CI%20tests/badge.svg)](https://gi
 [![pandoc-discuss on google
 groups](https://img.shields.io/badge/pandoc-discuss-red.svg?style=social)](https://groups.google.com/forum/#!forum/pandoc-discuss)
 
-## The universal markup converter
+The universal markup converter
+------------------------------
 
 Pandoc is a [Haskell](http://haskell.org) library for converting from
 one markup format to another, and a command-line tool that uses this
@@ -27,58 +29,60 @@ library. It can convert *from*
 
 <div id="input-formats">
 
-  - `commonmark` ([CommonMark](https://commonmark.org) Markdown)
-  - `creole` ([Creole 1.0](http://www.wikicreole.org/wiki/Creole1.0))
-  - `csv` ([CSV](https://tools.ietf.org/html/rfc4180) table)
-  - `docbook` ([DocBook](https://docbook.org))
-  - `docx` ([Word docx](https://en.wikipedia.org/wiki/Office_Open_XML))
-  - `dokuwiki` ([DokuWiki markup](https://www.dokuwiki.org/dokuwiki))
-  - `epub` ([EPUB](http://idpf.org/epub))
-  - `fb2`
+-   `commonmark` ([CommonMark](https://commonmark.org) Markdown)
+-   `commonmark_x` ([CommonMark](https://commonmark.org) Markdown with
+    extensions)
+-   `creole` ([Creole 1.0](http://www.wikicreole.org/wiki/Creole1.0))
+-   `csv` ([CSV](https://tools.ietf.org/html/rfc4180) table)
+-   `docbook` ([DocBook](https://docbook.org))
+-   `docx` ([Word docx](https://en.wikipedia.org/wiki/Office_Open_XML))
+-   `dokuwiki` ([DokuWiki markup](https://www.dokuwiki.org/dokuwiki))
+-   `epub` ([EPUB](http://idpf.org/epub))
+-   `fb2`
     ([FictionBook2](http://www.fictionbook.org/index.php/Eng:XML_Schema_Fictionbook_2.1)
     e-book)
-  - `gfm` ([GitHub-Flavored
+-   `gfm` ([GitHub-Flavored
     Markdown](https://help.github.com/articles/github-flavored-markdown/)),
     or the deprecated and less accurate `markdown_github`; use
     [`markdown_github`](https://pandoc.org/MANUAL.html#markdown-variants)
     only if you need extensions not supported in
     [`gfm`](https://pandoc.org/MANUAL.html#markdown-variants).
-  - `haddock` ([Haddock
+-   `haddock` ([Haddock
     markup](https://www.haskell.org/haddock/doc/html/ch03s08.html))
-  - `html` ([HTML](https://www.w3.org/html/))
-  - `ipynb` ([Jupyter
+-   `html` ([HTML](https://www.w3.org/html/))
+-   `ipynb` ([Jupyter
     notebook](https://nbformat.readthedocs.io/en/latest/))
-  - `jats` ([JATS](https://jats.nlm.nih.gov) XML)
-  - `jira`
+-   `jats` ([JATS](https://jats.nlm.nih.gov) XML)
+-   `jira`
     ([Jira](https://jira.atlassian.com/secure/WikiRendererHelpAction.jspa?section=all)/Confluence
     wiki markup)
-  - `json` (JSON version of native AST)
-  - `latex` ([LaTeX](https://www.latex-project.org/))
-  - `markdown` ([Pandoc’s
+-   `json` (JSON version of native AST)
+-   `latex` ([LaTeX](https://www.latex-project.org/))
+-   `markdown` ([Pandoc’s
     Markdown](https://pandoc.org/MANUAL.html#pandocs-markdown))
-  - `markdown_mmd`
+-   `markdown_mmd`
     ([MultiMarkdown](https://fletcherpenney.net/multimarkdown/))
-  - `markdown_phpextra` ([PHP Markdown
+-   `markdown_phpextra` ([PHP Markdown
     Extra](https://michelf.ca/projects/php-markdown/extra/))
-  - `markdown_strict` (original unextended
+-   `markdown_strict` (original unextended
     [Markdown](https://daringfireball.net/projects/markdown/))
-  - `mediawiki` ([MediaWiki
+-   `mediawiki` ([MediaWiki
     markup](https://www.mediawiki.org/wiki/Help:Formatting))
-  - `man` ([roff man](https://man.cx/groff_man\(7\)))
-  - `muse` ([Muse](https://amusewiki.org/library/manual))
-  - `native` (native Haskell)
-  - `odt` ([ODT](https://en.wikipedia.org/wiki/OpenDocument))
-  - `opml` ([OPML](http://dev.opml.org/spec2.html))
-  - `org` ([Emacs Org mode](https://orgmode.org))
-  - `rst`
+-   `man` ([roff man](https://man.cx/groff_man(7)))
+-   `muse` ([Muse](https://amusewiki.org/library/manual))
+-   `native` (native Haskell)
+-   `odt` ([ODT](https://en.wikipedia.org/wiki/OpenDocument))
+-   `opml` ([OPML](http://dev.opml.org/spec2.html))
+-   `org` ([Emacs Org mode](https://orgmode.org))
+-   `rst`
     ([reStructuredText](https://docutils.sourceforge.io/docs/ref/rst/introduction.html))
-  - `t2t` ([txt2tags](https://txt2tags.org))
-  - `textile` ([Textile](https://www.promptworks.com/textile))
-  - `tikiwiki` ([TikiWiki
+-   `t2t` ([txt2tags](https://txt2tags.org))
+-   `textile` ([Textile](https://www.promptworks.com/textile))
+-   `tikiwiki` ([TikiWiki
     markup](https://doc.tiki.org/Wiki-Syntax-Text#The_Markup_Language_Wiki-Syntax))
-  - `twiki` ([TWiki
+-   `twiki` ([TWiki
     markup](https://twiki.org/cgi-bin/view/TWiki/TextFormattingRules))
-  - `vimwiki` ([Vimwiki](https://vimwiki.github.io))
+-   `vimwiki` ([Vimwiki](https://vimwiki.github.io))
 
 </div>
 
@@ -86,94 +90,96 @@ It can convert *to*
 
 <div id="output-formats">
 
-  - `asciidoc` ([AsciiDoc](https://www.methods.co.nz/asciidoc/)) or
+-   `asciidoc` ([AsciiDoc](https://www.methods.co.nz/asciidoc/)) or
     `asciidoctor` ([AsciiDoctor](https://asciidoctor.org/))
-  - `beamer` ([LaTeX beamer](https://ctan.org/pkg/beamer) slide show)
-  - `commonmark` ([CommonMark](https://commonmark.org) Markdown)
-  - `context` ([ConTeXt](https://www.contextgarden.net/))
-  - `docbook` or `docbook4` ([DocBook](https://docbook.org) 4)
-  - `docbook5` (DocBook 5)
-  - `docx` ([Word docx](https://en.wikipedia.org/wiki/Office_Open_XML))
-  - `dokuwiki` ([DokuWiki markup](https://www.dokuwiki.org/dokuwiki))
-  - `epub` or `epub3` ([EPUB](http://idpf.org/epub) v3 book)
-  - `epub2` (EPUB v2)
-  - `fb2`
+-   `beamer` ([LaTeX beamer](https://ctan.org/pkg/beamer) slide show)
+-   `commonmark` ([CommonMark](https://commonmark.org) Markdown)
+-   `commonmark_x` ([CommonMark](https://commonmark.org) Markdown with
+    extensions)
+-   `context` ([ConTeXt](https://www.contextgarden.net/))
+-   `docbook` or `docbook4` ([DocBook](https://docbook.org) 4)
+-   `docbook5` (DocBook 5)
+-   `docx` ([Word docx](https://en.wikipedia.org/wiki/Office_Open_XML))
+-   `dokuwiki` ([DokuWiki markup](https://www.dokuwiki.org/dokuwiki))
+-   `epub` or `epub3` ([EPUB](http://idpf.org/epub) v3 book)
+-   `epub2` (EPUB v2)
+-   `fb2`
     ([FictionBook2](http://www.fictionbook.org/index.php/Eng:XML_Schema_Fictionbook_2.1)
     e-book)
-  - `gfm` ([GitHub-Flavored
+-   `gfm` ([GitHub-Flavored
     Markdown](https://help.github.com/articles/github-flavored-markdown/)),
     or the deprecated and less accurate `markdown_github`; use
     [`markdown_github`](https://pandoc.org/MANUAL.html#markdown-variants)
     only if you need extensions not supported in
     [`gfm`](https://pandoc.org/MANUAL.html#markdown-variants).
-  - `haddock` ([Haddock
+-   `haddock` ([Haddock
     markup](https://www.haskell.org/haddock/doc/html/ch03s08.html))
-  - `html` or `html5` ([HTML](https://www.w3.org/html/),
+-   `html` or `html5` ([HTML](https://www.w3.org/html/),
     i.e. [HTML5](https://html.spec.whatwg.org/)/XHTML [polyglot
     markup](https://www.w3.org/TR/html-polyglot/))
-  - `html4` ([XHTML](https://www.w3.org/TR/xhtml1/) 1.0 Transitional)
-  - `icml` ([InDesign
+-   `html4` ([XHTML](https://www.w3.org/TR/xhtml1/) 1.0 Transitional)
+-   `icml` ([InDesign
     ICML](https://wwwimages.adobe.com/www.adobe.com/content/dam/acom/en/devnet/indesign/sdk/cs6/idml/idml-cookbook.pdf))
-  - `ipynb` ([Jupyter
+-   `ipynb` ([Jupyter
     notebook](https://nbformat.readthedocs.io/en/latest/))
-  - `jats_archiving` ([JATS](https://jats.nlm.nih.gov) XML, Archiving
+-   `jats_archiving` ([JATS](https://jats.nlm.nih.gov) XML, Archiving
     and Interchange Tag Set)
-  - `jats_articleauthoring` ([JATS](https://jats.nlm.nih.gov) XML,
+-   `jats_articleauthoring` ([JATS](https://jats.nlm.nih.gov) XML,
     Article Authoring Tag Set)
-  - `jats_publishing` ([JATS](https://jats.nlm.nih.gov) XML, Journal
+-   `jats_publishing` ([JATS](https://jats.nlm.nih.gov) XML, Journal
     Publishing Tag Set)
-  - `jats` (alias for `jats_archiving`)
-  - `jira`
+-   `jats` (alias for `jats_archiving`)
+-   `jira`
     ([Jira](https://jira.atlassian.com/secure/WikiRendererHelpAction.jspa?section=all)/Confluence
     wiki markup)
-  - `json` (JSON version of native AST)
-  - `latex` ([LaTeX](https://www.latex-project.org/))
-  - `man` ([roff man](https://man.cx/groff_man\(7\)))
-  - `markdown` ([Pandoc’s
+-   `json` (JSON version of native AST)
+-   `latex` ([LaTeX](https://www.latex-project.org/))
+-   `man` ([roff man](https://man.cx/groff_man(7)))
+-   `markdown` ([Pandoc’s
     Markdown](https://pandoc.org/MANUAL.html#pandocs-markdown))
-  - `markdown_mmd`
+-   `markdown_mmd`
     ([MultiMarkdown](https://fletcherpenney.net/multimarkdown/))
-  - `markdown_phpextra` ([PHP Markdown
+-   `markdown_phpextra` ([PHP Markdown
     Extra](https://michelf.ca/projects/php-markdown/extra/))
-  - `markdown_strict` (original unextended
+-   `markdown_strict` (original unextended
     [Markdown](https://daringfireball.net/projects/markdown/))
-  - `mediawiki` ([MediaWiki
+-   `mediawiki` ([MediaWiki
     markup](https://www.mediawiki.org/wiki/Help:Formatting))
-  - `ms` ([roff ms](https://man.cx/groff_ms\(7\)))
-  - `muse` ([Muse](https://amusewiki.org/library/manual)),
-  - `native` (native Haskell),
-  - `odt` ([OpenOffice text
+-   `ms` ([roff ms](https://man.cx/groff_ms(7)))
+-   `muse` ([Muse](https://amusewiki.org/library/manual)),
+-   `native` (native Haskell),
+-   `odt` ([OpenOffice text
     document](https://en.wikipedia.org/wiki/OpenDocument))
-  - `opml` ([OPML](http://dev.opml.org/spec2.html))
-  - `opendocument` ([OpenDocument](http://opendocument.xml.org))
-  - `org` ([Emacs Org mode](https://orgmode.org))
-  - `pdf` ([PDF](https://www.adobe.com/pdf/))
-  - `plain` (plain text),
-  - `pptx`
+-   `opml` ([OPML](http://dev.opml.org/spec2.html))
+-   `opendocument` ([OpenDocument](http://opendocument.xml.org))
+-   `org` ([Emacs Org mode](https://orgmode.org))
+-   `pdf` ([PDF](https://www.adobe.com/pdf/))
+-   `plain` (plain text),
+-   `pptx`
     ([PowerPoint](https://en.wikipedia.org/wiki/Microsoft_PowerPoint)
     slide show)
-  - `rst`
+-   `rst`
     ([reStructuredText](https://docutils.sourceforge.io/docs/ref/rst/introduction.html))
-  - `rtf` ([Rich Text
+-   `rtf` ([Rich Text
     Format](https://en.wikipedia.org/wiki/Rich_Text_Format))
-  - `texinfo` ([GNU Texinfo](https://www.gnu.org/software/texinfo/))
-  - `textile` ([Textile](https://www.promptworks.com/textile))
-  - `slideous` ([Slideous](https://goessner.net/articles/slideous/) HTML
+-   `texinfo` ([GNU Texinfo](https://www.gnu.org/software/texinfo/))
+-   `textile` ([Textile](https://www.promptworks.com/textile))
+-   `slideous` ([Slideous](https://goessner.net/articles/slideous/) HTML
     and JavaScript slide show)
-  - `slidy` ([Slidy](https://www.w3.org/Talks/Tools/Slidy2/) HTML and
+-   `slidy` ([Slidy](https://www.w3.org/Talks/Tools/Slidy2/) HTML and
     JavaScript slide show)
-  - `dzslides` ([DZSlides](http://paulrouget.com/dzslides/) HTML5 +
+-   `dzslides` ([DZSlides](http://paulrouget.com/dzslides/) HTML5 +
     JavaScript slide show),
-  - `revealjs` ([reveal.js](https://revealjs.com/) HTML5 + JavaScript
+-   `revealjs` ([reveal.js](https://revealjs.com/) HTML5 + JavaScript
     slide show)
-  - `s5` ([S5](https://meyerweb.com/eric/tools/s5/) HTML and JavaScript
+-   `s5` ([S5](https://meyerweb.com/eric/tools/s5/) HTML and JavaScript
     slide show)
-  - `tei` ([TEI Simple](https://github.com/TEIC/TEI-Simple))
-  - `xwiki` ([XWiki
+-   `tei` ([TEI Simple](https://github.com/TEIC/TEI-Simple))
+-   `xwiki` ([XWiki
     markup](https://www.xwiki.org/xwiki/bin/view/Documentation/UserGuide/Features/XWikiSyntax/))
-  - `zimwiki` ([ZimWiki
+-   `zimwiki` ([ZimWiki
     markup](https://zim-wiki.org/manual/Help/Wiki_Syntax.html))
-  - the path of a custom Lua writer, see [Custom
+-   the path of a custom Lua writer, see [Custom
     writers](https://pandoc.org/MANUAL.html#custom-writers) below
 
 </div>
@@ -204,11 +210,13 @@ While conversions from pandoc’s Markdown to all formats aspire to be
 perfect, conversions from formats more expressive than pandoc’s Markdown
 can be expected to be lossy.
 
-## Installing
+Installing
+----------
 
 Here’s [how to install pandoc](INSTALL.md).
 
-## Documentation
+Documentation
+-------------
 
 Pandoc’s website contains a full [User’s
 Guide](https://pandoc.org/MANUAL.html). It is also available
@@ -217,13 +225,15 @@ contains some [examples of the use of
 pandoc](https://pandoc.org/demos.html) and a limited [online
 demo](https://pandoc.org/try).
 
-## Contributing
+Contributing
+------------
 
 Pull requests, bug reports, and feature requests are welcome. Please
 make sure to read [the contributor guidelines](CONTRIBUTING.md) before
 opening a new issue.
 
-## License
+License
+-------
 
 © 2006-2020 John MacFarlane (jgm@berkeley.edu). Released under the
 [GPL](http://www.gnu.org/copyleft/gpl.html "GNU General Public License"),