From 5efb66c3e5f920d0fea02a9394a88e532da4c1fe Mon Sep 17 00:00:00 2001
From: Vyacheslav Matyukhin <me@berekuk.ru>
Date: Sun, 9 Oct 2022 15:27:47 +0400
Subject: [PATCH] changelog page

---
 CHANGELOG.md                        |  1 +
 packages/website/docs/Changelog.mdx | 20 ++++++++++++++++++++
 packages/website/sidebars.js        |  5 +++++
 3 files changed, 26 insertions(+)
 create mode 100644 CHANGELOG.md
 create mode 100644 packages/website/docs/Changelog.mdx

diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 00000000..f7b0d07a
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1 @@
+See the [Changelog.mdx page](./packages/website/docs/Changelog.mdx) for the changelog.
diff --git a/packages/website/docs/Changelog.mdx b/packages/website/docs/Changelog.mdx
new file mode 100644
index 00000000..0d211061
--- /dev/null
+++ b/packages/website/docs/Changelog.mdx
@@ -0,0 +1,20 @@
+---
+title: Changelog
+---
+
+## 0.5.0
+
+- Performance improvements:
+  - Interpreter is now 5x-20x faster on code written in Squiggle
+  - SampleSet to PointSet conversions are 2x faster
+  - cdf function on SampleSets is 30x faster
+  - overall speedup is about 2x on average on real code written in Squiggle
+- 50% smaller bundle size for [@quri/squiggle-lang](https://www.npmjs.com/package/@quri/squiggle-lang); 20% smaller bundle size for [@quri/squiggle-components](https://www.npmjs.com/package/@quri/squiggle-components).
+
+### Breaking changes
+
+Some rarely used math functions got removed or moved to the `Math` namespace.
+
+For example, `cos(x)` is now `Math.cos(x)`, and `atanh(x)` doesn't exist.
+
+If your code is now failing with `<function> is not defined` for anything from [this list](https://mathjs.org/docs/reference/functions.html), try adding `Math.` prefix first, and then complain on [Github issues](https://github.com/quantified-uncertainty/squiggle/issues).
diff --git a/packages/website/sidebars.js b/packages/website/sidebars.js
index 85c644a4..9da5ce43 100644
--- a/packages/website/sidebars.js
+++ b/packages/website/sidebars.js
@@ -61,6 +61,11 @@ const sidebars = {
         },
       ],
     },
+    {
+      type: "doc",
+      id: "Changelog",
+      label: "Changelog",
+    },
   ],
 
   // But you can create a sidebar manually