diff --git a/Makefile b/Makefile
deleted file mode 100644
index d509bd36..00000000
--- a/Makefile
+++ /dev/null
@@ -1,5 +0,0 @@
-
-%.html: %.adoc
-	asciidoc $< > $@
-
-all: index.html
diff --git a/index.adoc b/index.adoc
deleted file mode 100644
index a07b41d8..00000000
--- a/index.adoc
+++ /dev/null
@@ -1,17 +0,0 @@
-= OCaml-containers
-
-link:last[Current documentation]
-
-Other versions:
-
-- link:dev[dev]
-- link:2.0[2.0]
-- link:1.4[1.4]
-- link:1.3[1.3]
-- link:1.2[1.2]
-- link:1.1[1.1]
-- link:1.0[1.0]
-- link:0.21[0.21]
-- link:0.20[0.20]
-- link:0.19[0.19]
-- link:0.17[0.17]
diff --git a/index.html b/index.html
deleted file mode 100644
index d40e4138..00000000
--- a/index.html
+++ /dev/null
@@ -1,812 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
-    "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
-<head>
-<meta http-equiv="Content-Type" content="application/xhtml+xml; charset=UTF-8" />
-<meta name="generator" content="AsciiDoc 8.6.10" />
-<title>OCaml-containers</title>
-<style type="text/css">
-/* Shared CSS for AsciiDoc xhtml11 and html5 backends */
-
-/* Default font. */
-body {
-  font-family: Georgia,serif;
-}
-
-/* Title font. */
-h1, h2, h3, h4, h5, h6,
-div.title, caption.title,
-thead, p.table.header,
-#toctitle,
-#author, #revnumber, #revdate, #revremark,
-#footer {
-  font-family: Arial,Helvetica,sans-serif;
-}
-
-body {
-  margin: 1em 5% 1em 5%;
-}
-
-a {
-  color: blue;
-  text-decoration: underline;
-}
-a:visited {
-  color: fuchsia;
-}
-
-em {
-  font-style: italic;
-  color: navy;
-}
-
-strong {
-  font-weight: bold;
-  color: #083194;
-}
-
-h1, h2, h3, h4, h5, h6 {
-  color: #527bbd;
-  margin-top: 1.2em;
-  margin-bottom: 0.5em;
-  line-height: 1.3;
-}
-
-h1, h2, h3 {
-  border-bottom: 2px solid silver;
-}
-h2 {
-  padding-top: 0.5em;
-}
-h3 {
-  float: left;
-}
-h3 + * {
-  clear: left;
-}
-h5 {
-  font-size: 1.0em;
-}
-
-div.sectionbody {
-  margin-left: 0;
-}
-
-hr {
-  border: 1px solid silver;
-}
-
-p {
-  margin-top: 0.5em;
-  margin-bottom: 0.5em;
-}
-
-ul, ol, li > p {
-  margin-top: 0;
-}
-ul > li     { color: #aaa; }
-ul > li > * { color: black; }
-
-.monospaced, code, pre {
-  font-family: "Courier New", Courier, monospace;
-  font-size: inherit;
-  color: navy;
-  padding: 0;
-  margin: 0;
-}
-pre {
-  white-space: pre-wrap;
-}
-
-#author {
-  color: #527bbd;
-  font-weight: bold;
-  font-size: 1.1em;
-}
-#email {
-}
-#revnumber, #revdate, #revremark {
-}
-
-#footer {
-  font-size: small;
-  border-top: 2px solid silver;
-  padding-top: 0.5em;
-  margin-top: 4.0em;
-}
-#footer-text {
-  float: left;
-  padding-bottom: 0.5em;
-}
-#footer-badges {
-  float: right;
-  padding-bottom: 0.5em;
-}
-
-#preamble {
-  margin-top: 1.5em;
-  margin-bottom: 1.5em;
-}
-div.imageblock, div.exampleblock, div.verseblock,
-div.quoteblock, div.literalblock, div.listingblock, div.sidebarblock,
-div.admonitionblock {
-  margin-top: 1.0em;
-  margin-bottom: 1.5em;
-}
-div.admonitionblock {
-  margin-top: 2.0em;
-  margin-bottom: 2.0em;
-  margin-right: 10%;
-  color: #606060;
-}
-
-div.content { /* Block element content. */
-  padding: 0;
-}
-
-/* Block element titles. */
-div.title, caption.title {
-  color: #527bbd;
-  font-weight: bold;
-  text-align: left;
-  margin-top: 1.0em;
-  margin-bottom: 0.5em;
-}
-div.title + * {
-  margin-top: 0;
-}
-
-td div.title:first-child {
-  margin-top: 0.0em;
-}
-div.content div.title:first-child {
-  margin-top: 0.0em;
-}
-div.content + div.title {
-  margin-top: 0.0em;
-}
-
-div.sidebarblock > div.content {
-  background: #ffffee;
-  border: 1px solid #dddddd;
-  border-left: 4px solid #f0f0f0;
-  padding: 0.5em;
-}
-
-div.listingblock > div.content {
-  border: 1px solid #dddddd;
-  border-left: 5px solid #f0f0f0;
-  background: #f8f8f8;
-  padding: 0.5em;
-}
-
-div.quoteblock, div.verseblock {
-  padding-left: 1.0em;
-  margin-left: 1.0em;
-  margin-right: 10%;
-  border-left: 5px solid #f0f0f0;
-  color: #888;
-}
-
-div.quoteblock > div.attribution {
-  padding-top: 0.5em;
-  text-align: right;
-}
-
-div.verseblock > pre.content {
-  font-family: inherit;
-  font-size: inherit;
-}
-div.verseblock > div.attribution {
-  padding-top: 0.75em;
-  text-align: left;
-}
-/* DEPRECATED: Pre version 8.2.7 verse style literal block. */
-div.verseblock + div.attribution {
-  text-align: left;
-}
-
-div.admonitionblock .icon {
-  vertical-align: top;
-  font-size: 1.1em;
-  font-weight: bold;
-  text-decoration: underline;
-  color: #527bbd;
-  padding-right: 0.5em;
-}
-div.admonitionblock td.content {
-  padding-left: 0.5em;
-  border-left: 3px solid #dddddd;
-}
-
-div.exampleblock > div.content {
-  border-left: 3px solid #dddddd;
-  padding-left: 0.5em;
-}
-
-div.imageblock div.content { padding-left: 0; }
-span.image img { border-style: none; vertical-align: text-bottom; }
-a.image:visited { color: white; }
-
-dl {
-  margin-top: 0.8em;
-  margin-bottom: 0.8em;
-}
-dt {
-  margin-top: 0.5em;
-  margin-bottom: 0;
-  font-style: normal;
-  color: navy;
-}
-dd > *:first-child {
-  margin-top: 0.1em;
-}
-
-ul, ol {
-    list-style-position: outside;
-}
-ol.arabic {
-  list-style-type: decimal;
-}
-ol.loweralpha {
-  list-style-type: lower-alpha;
-}
-ol.upperalpha {
-  list-style-type: upper-alpha;
-}
-ol.lowerroman {
-  list-style-type: lower-roman;
-}
-ol.upperroman {
-  list-style-type: upper-roman;
-}
-
-div.compact ul, div.compact ol,
-div.compact p, div.compact p,
-div.compact div, div.compact div {
-  margin-top: 0.1em;
-  margin-bottom: 0.1em;
-}
-
-tfoot {
-  font-weight: bold;
-}
-td > div.verse {
-  white-space: pre;
-}
-
-div.hdlist {
-  margin-top: 0.8em;
-  margin-bottom: 0.8em;
-}
-div.hdlist tr {
-  padding-bottom: 15px;
-}
-dt.hdlist1.strong, td.hdlist1.strong {
-  font-weight: bold;
-}
-td.hdlist1 {
-  vertical-align: top;
-  font-style: normal;
-  padding-right: 0.8em;
-  color: navy;
-}
-td.hdlist2 {
-  vertical-align: top;
-}
-div.hdlist.compact tr {
-  margin: 0;
-  padding-bottom: 0;
-}
-
-.comment {
-  background: yellow;
-}
-
-.footnote, .footnoteref {
-  font-size: 0.8em;
-}
-
-span.footnote, span.footnoteref {
-  vertical-align: super;
-}
-
-#footnotes {
-  margin: 20px 0 20px 0;
-  padding: 7px 0 0 0;
-}
-
-#footnotes div.footnote {
-  margin: 0 0 5px 0;
-}
-
-#footnotes hr {
-  border: none;
-  border-top: 1px solid silver;
-  height: 1px;
-  text-align: left;
-  margin-left: 0;
-  width: 20%;
-  min-width: 100px;
-}
-
-div.colist td {
-  padding-right: 0.5em;
-  padding-bottom: 0.3em;
-  vertical-align: top;
-}
-div.colist td img {
-  margin-top: 0.3em;
-}
-
-@media print {
-  #footer-badges { display: none; }
-}
-
-#toc {
-  margin-bottom: 2.5em;
-}
-
-#toctitle {
-  color: #527bbd;
-  font-size: 1.1em;
-  font-weight: bold;
-  margin-top: 1.0em;
-  margin-bottom: 0.1em;
-}
-
-div.toclevel0, div.toclevel1, div.toclevel2, div.toclevel3, div.toclevel4 {
-  margin-top: 0;
-  margin-bottom: 0;
-}
-div.toclevel2 {
-  margin-left: 2em;
-  font-size: 0.9em;
-}
-div.toclevel3 {
-  margin-left: 4em;
-  font-size: 0.9em;
-}
-div.toclevel4 {
-  margin-left: 6em;
-  font-size: 0.9em;
-}
-
-span.aqua { color: aqua; }
-span.black { color: black; }
-span.blue { color: blue; }
-span.fuchsia { color: fuchsia; }
-span.gray { color: gray; }
-span.green { color: green; }
-span.lime { color: lime; }
-span.maroon { color: maroon; }
-span.navy { color: navy; }
-span.olive { color: olive; }
-span.purple { color: purple; }
-span.red { color: red; }
-span.silver { color: silver; }
-span.teal { color: teal; }
-span.white { color: white; }
-span.yellow { color: yellow; }
-
-span.aqua-background { background: aqua; }
-span.black-background { background: black; }
-span.blue-background { background: blue; }
-span.fuchsia-background { background: fuchsia; }
-span.gray-background { background: gray; }
-span.green-background { background: green; }
-span.lime-background { background: lime; }
-span.maroon-background { background: maroon; }
-span.navy-background { background: navy; }
-span.olive-background { background: olive; }
-span.purple-background { background: purple; }
-span.red-background { background: red; }
-span.silver-background { background: silver; }
-span.teal-background { background: teal; }
-span.white-background { background: white; }
-span.yellow-background { background: yellow; }
-
-span.big { font-size: 2em; }
-span.small { font-size: 0.6em; }
-
-span.underline { text-decoration: underline; }
-span.overline { text-decoration: overline; }
-span.line-through { text-decoration: line-through; }
-
-div.unbreakable { page-break-inside: avoid; }
-
-
-/*
- * xhtml11 specific
- *
- * */
-
-div.tableblock {
-  margin-top: 1.0em;
-  margin-bottom: 1.5em;
-}
-div.tableblock > table {
-  border: 3px solid #527bbd;
-}
-thead, p.table.header {
-  font-weight: bold;
-  color: #527bbd;
-}
-p.table {
-  margin-top: 0;
-}
-/* Because the table frame attribute is overriden by CSS in most browsers. */
-div.tableblock > table[frame="void"] {
-  border-style: none;
-}
-div.tableblock > table[frame="hsides"] {
-  border-left-style: none;
-  border-right-style: none;
-}
-div.tableblock > table[frame="vsides"] {
-  border-top-style: none;
-  border-bottom-style: none;
-}
-
-
-/*
- * html5 specific
- *
- * */
-
-table.tableblock {
-  margin-top: 1.0em;
-  margin-bottom: 1.5em;
-}
-thead, p.tableblock.header {
-  font-weight: bold;
-  color: #527bbd;
-}
-p.tableblock {
-  margin-top: 0;
-}
-table.tableblock {
-  border-width: 3px;
-  border-spacing: 0px;
-  border-style: solid;
-  border-color: #527bbd;
-  border-collapse: collapse;
-}
-th.tableblock, td.tableblock {
-  border-width: 1px;
-  padding: 4px;
-  border-style: solid;
-  border-color: #527bbd;
-}
-
-table.tableblock.frame-topbot {
-  border-left-style: hidden;
-  border-right-style: hidden;
-}
-table.tableblock.frame-sides {
-  border-top-style: hidden;
-  border-bottom-style: hidden;
-}
-table.tableblock.frame-none {
-  border-style: hidden;
-}
-
-th.tableblock.halign-left, td.tableblock.halign-left {
-  text-align: left;
-}
-th.tableblock.halign-center, td.tableblock.halign-center {
-  text-align: center;
-}
-th.tableblock.halign-right, td.tableblock.halign-right {
-  text-align: right;
-}
-
-th.tableblock.valign-top, td.tableblock.valign-top {
-  vertical-align: top;
-}
-th.tableblock.valign-middle, td.tableblock.valign-middle {
-  vertical-align: middle;
-}
-th.tableblock.valign-bottom, td.tableblock.valign-bottom {
-  vertical-align: bottom;
-}
-
-
-/*
- * manpage specific
- *
- * */
-
-body.manpage h1 {
-  padding-top: 0.5em;
-  padding-bottom: 0.5em;
-  border-top: 2px solid silver;
-  border-bottom: 2px solid silver;
-}
-body.manpage h2 {
-  border-style: none;
-}
-body.manpage div.sectionbody {
-  margin-left: 3em;
-}
-
-@media print {
-  body.manpage div#toc { display: none; }
-}
-
-
-</style>
-<script type="text/javascript">
-/*<![CDATA[*/
-var asciidoc = {  // Namespace.
-
-/////////////////////////////////////////////////////////////////////
-// Table Of Contents generator
-/////////////////////////////////////////////////////////////////////
-
-/* Author: Mihai Bazon, September 2002
- * http://students.infoiasi.ro/~mishoo
- *
- * Table Of Content generator
- * Version: 0.4
- *
- * Feel free to use this script under the terms of the GNU General Public
- * License, as long as you do not remove or alter this notice.
- */
-
- /* modified by Troy D. Hanson, September 2006. License: GPL */
- /* modified by Stuart Rackham, 2006, 2009. License: GPL */
-
-// toclevels = 1..4.
-toc: function (toclevels) {
-
-  function getText(el) {
-    var text = "";
-    for (var i = el.firstChild; i != null; i = i.nextSibling) {
-      if (i.nodeType == 3 /* Node.TEXT_NODE */) // IE doesn't speak constants.
-        text += i.data;
-      else if (i.firstChild != null)
-        text += getText(i);
-    }
-    return text;
-  }
-
-  function TocEntry(el, text, toclevel) {
-    this.element = el;
-    this.text = text;
-    this.toclevel = toclevel;
-  }
-
-  function tocEntries(el, toclevels) {
-    var result = new Array;
-    var re = new RegExp('[hH]([1-'+(toclevels+1)+'])');
-    // Function that scans the DOM tree for header elements (the DOM2
-    // nodeIterator API would be a better technique but not supported by all
-    // browsers).
-    var iterate = function (el) {
-      for (var i = el.firstChild; i != null; i = i.nextSibling) {
-        if (i.nodeType == 1 /* Node.ELEMENT_NODE */) {
-          var mo = re.exec(i.tagName);
-          if (mo && (i.getAttribute("class") || i.getAttribute("className")) != "float") {
-            result[result.length] = new TocEntry(i, getText(i), mo[1]-1);
-          }
-          iterate(i);
-        }
-      }
-    }
-    iterate(el);
-    return result;
-  }
-
-  var toc = document.getElementById("toc");
-  if (!toc) {
-    return;
-  }
-
-  // Delete existing TOC entries in case we're reloading the TOC.
-  var tocEntriesToRemove = [];
-  var i;
-  for (i = 0; i < toc.childNodes.length; i++) {
-    var entry = toc.childNodes[i];
-    if (entry.nodeName.toLowerCase() == 'div'
-     && entry.getAttribute("class")
-     && entry.getAttribute("class").match(/^toclevel/))
-      tocEntriesToRemove.push(entry);
-  }
-  for (i = 0; i < tocEntriesToRemove.length; i++) {
-    toc.removeChild(tocEntriesToRemove[i]);
-  }
-
-  // Rebuild TOC entries.
-  var entries = tocEntries(document.getElementById("content"), toclevels);
-  for (var i = 0; i < entries.length; ++i) {
-    var entry = entries[i];
-    if (entry.element.id == "")
-      entry.element.id = "_toc_" + i;
-    var a = document.createElement("a");
-    a.href = "#" + entry.element.id;
-    a.appendChild(document.createTextNode(entry.text));
-    var div = document.createElement("div");
-    div.appendChild(a);
-    div.className = "toclevel" + entry.toclevel;
-    toc.appendChild(div);
-  }
-  if (entries.length == 0)
-    toc.parentNode.removeChild(toc);
-},
-
-
-/////////////////////////////////////////////////////////////////////
-// Footnotes generator
-/////////////////////////////////////////////////////////////////////
-
-/* Based on footnote generation code from:
- * http://www.brandspankingnew.net/archive/2005/07/format_footnote.html
- */
-
-footnotes: function () {
-  // Delete existing footnote entries in case we're reloading the footnodes.
-  var i;
-  var noteholder = document.getElementById("footnotes");
-  if (!noteholder) {
-    return;
-  }
-  var entriesToRemove = [];
-  for (i = 0; i < noteholder.childNodes.length; i++) {
-    var entry = noteholder.childNodes[i];
-    if (entry.nodeName.toLowerCase() == 'div' && entry.getAttribute("class") == "footnote")
-      entriesToRemove.push(entry);
-  }
-  for (i = 0; i < entriesToRemove.length; i++) {
-    noteholder.removeChild(entriesToRemove[i]);
-  }
-
-  // Rebuild footnote entries.
-  var cont = document.getElementById("content");
-  var spans = cont.getElementsByTagName("span");
-  var refs = {};
-  var n = 0;
-  for (i=0; i<spans.length; i++) {
-    if (spans[i].className == "footnote") {
-      n++;
-      var note = spans[i].getAttribute("data-note");
-      if (!note) {
-        // Use [\s\S] in place of . so multi-line matches work.
-        // Because JavaScript has no s (dotall) regex flag.
-        note = spans[i].innerHTML.match(/\s*\[([\s\S]*)]\s*/)[1];
-        spans[i].innerHTML =
-          "[<a id='_footnoteref_" + n + "' href='#_footnote_" + n +
-          "' title='View footnote' class='footnote'>" + n + "</a>]";
-        spans[i].setAttribute("data-note", note);
-      }
-      noteholder.innerHTML +=
-        "<div class='footnote' id='_footnote_" + n + "'>" +
-        "<a href='#_footnoteref_" + n + "' title='Return to text'>" +
-        n + "</a>. " + note + "</div>";
-      var id =spans[i].getAttribute("id");
-      if (id != null) refs["#"+id] = n;
-    }
-  }
-  if (n == 0)
-    noteholder.parentNode.removeChild(noteholder);
-  else {
-    // Process footnoterefs.
-    for (i=0; i<spans.length; i++) {
-      if (spans[i].className == "footnoteref") {
-        var href = spans[i].getElementsByTagName("a")[0].getAttribute("href");
-        href = href.match(/#.*/)[0];  // Because IE return full URL.
-        n = refs[href];
-        spans[i].innerHTML =
-          "[<a href='#_footnote_" + n +
-          "' title='View footnote' class='footnote'>" + n + "</a>]";
-      }
-    }
-  }
-},
-
-install: function(toclevels) {
-  var timerId;
-
-  function reinstall() {
-    asciidoc.footnotes();
-    if (toclevels) {
-      asciidoc.toc(toclevels);
-    }
-  }
-
-  function reinstallAndRemoveTimer() {
-    clearInterval(timerId);
-    reinstall();
-  }
-
-  timerId = setInterval(reinstall, 500);
-  if (document.addEventListener)
-    document.addEventListener("DOMContentLoaded", reinstallAndRemoveTimer, false);
-  else
-    window.onload = reinstallAndRemoveTimer;
-}
-
-}
-asciidoc.install();
-/*]]>*/
-</script>
-</head>
-<body class="article">
-<div id="header">
-<h1>OCaml-containers</h1>
-</div>
-<div id="content">
-<div id="preamble">
-<div class="sectionbody">
-<div class="paragraph"><p><a href="last">Current documentation</a></p></div>
-<div class="paragraph"><p>Other versions:</p></div>
-<div class="ulist"><ul>
-<li>
-<p>
-<a href="dev">dev</a>
-</p>
-</li>
-<li>
-<p>
-<a href="2.0">2.0</a>
-</p>
-</li>
-<li>
-<p>
-<a href="1.4">1.4</a>
-</p>
-</li>
-<li>
-<p>
-<a href="1.3">1.3</a>
-</p>
-</li>
-<li>
-<p>
-<a href="1.2">1.2</a>
-</p>
-</li>
-<li>
-<p>
-<a href="1.1">1.1</a>
-</p>
-</li>
-<li>
-<p>
-<a href="1.0">1.0</a>
-</p>
-</li>
-<li>
-<p>
-<a href="0.21">0.21</a>
-</p>
-</li>
-<li>
-<p>
-<a href="0.20">0.20</a>
-</p>
-</li>
-<li>
-<p>
-<a href="0.19">0.19</a>
-</p>
-</li>
-<li>
-<p>
-<a href="0.17">0.17</a>
-</p>
-</li>
-</ul></div>
-</div>
-</div>
-</div>
-<div id="footnotes"><hr /></div>
-<div id="footer">
-<div id="footer-text">
-Last updated
- 2018-01-21 15:47:16 CST
-</div>
-</div>
-</body>
-</html>
diff --git a/index.md b/index.md
new file mode 100644
index 00000000..16e28fce
--- /dev/null
+++ b/index.md
@@ -0,0 +1,17 @@
+# OCaml-containers
+
+[Current documentation](last)
+
+Other versions:
+
+- [dev](dev)
+- [2.0](2.0)
+- [1.4](1.4)
+- [1.3](1.3)
+- [1.2](1.2)
+- [1.1](1.1)
+- [1.0](1.0)
+- [0.21](0.21)
+- [0.20](0.20)
+- [0.19](0.19)
+- [0.17](0.17)
