diff --git a/NEWS.md b/NEWS.md
index 37d7584..e3aa2d0 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,16 +1,7 @@
 # risotto (development version)
 
-# risotto 0.4.0
-
-* Added descriptions to sidebar of list pages, where defined in the frontmatter of `_index.md` (#55)
-* Made sidebar sticky, avoiding overflow for long tables of contents (#51)
-* Added convenience classes for colours, e.g. `.base00` and `.bg-base00`.
-* Fixed overflow of code blocks with line numbers (#41)
-* Fixed invalid HTML in page header (#64)
-* Updated FontAwesome to 6.5.1 (#63)
-  * Please note that future versions will probably not include FontAwesome by default
-* Updated Academicons to 1.9.4 (#63)
-  * Please note that future versions will probably not include Academicons by default
+* Fix overflow of code blocks with line numbers (#41)
+* Add descriptions to sidebar of list pages, where defined in the frontmatter of `_index.md` (#55)
 
 # risotto 0.3.0
 
diff --git a/README.md b/README.md
index 91919c2..c90ff60 100644
--- a/README.md
+++ b/README.md
@@ -10,25 +10,19 @@ risotto is a minimalist, responsive [hugo](https://gohugo.io) theme inspired by
 
 ![Screenshot of the risotto theme](https://raw.githubusercontent.com/joeroe/risotto/master/images/screenshot.png)
 
-## Features
-
-* Plain, semantic HTML with no Javascript
-* Plain CSS – no frameworks, no preprocessors, just simple and easy-to-customise stylesheets
-* Uses [CSS Grid](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_grid_layout) for native responsive behaviour without arbitrary breakpoints
-* Comes with [16 built-in colour schemes](#colour-schemes) based on popular terminal themes plus the ability to use custom themes using the [base16 system](https://github.com/monicfenga/base16-styles)
-
 ## Install
 
-The easiest way to install the theme is to [download the latest release](https://github.com/joeroe/risotto/releases/tag/release) and extract it to your project's `themes/` directory.
-You can also clone this repository into your site's `themes` directory and checkout the latest release:
+The easiest way to install the theme is to clone this repository into your site's `themes` directory:
 
 ```shell
-git clone https://github.com/joeroe/risotto themes/risotto && cd themes/risotto
-rit checkout $(git tag -l | grep '^v[0-9.]*$' | sort -V | tail -n 1)
+git clone https://github.com/joeroe/risotto themes/risotto
 ```
 
-Note that this will not work if your site is itself a git repository.
-In that case, you can add the theme as a [git submodule](https://git-scm.com/book/en/v2/Git-Tools-Submodules), but this is not recommended due to the difficulty of tracking a specific release.
+If your site is already a git repository, you can add the theme as a submodule instead:
+
+```shell
+git submodule add https://github.com/joeroe/risotto.git themes/risotto
+```
 
 ## Update
 
@@ -39,15 +33,19 @@ cd themes/risotto
 git pull
 ```
 
-Otherwise, simply [download the latest release](https://github.com/joeroe/risotto/releases/tag/release) and extract it to your project's `themes/` directory, replacing the old version.
+Or, if you added it as a git submodule:
+
+```shell
+git submodule update --remote
+```
 
 ## Configure
 
-To use the theme, add `theme = 'risotto'` to your site's `config.toml`, or `theme: risotto` to your `config.yaml`.
+To use the theme, add `theme = 'risotto'` to your site's `config.toml`, or `theme: risotto` to your `config.yaml` respectively.
 
 See `exampleSite/config.toml` for the theme-specific parameters you need to add to your site's `config.toml` or `config.yaml` to configure the theme.
 
-### Colour schemes
+### Colour palettes
 
 risotto uses the [base16 framework](https://github.com/chriskempson/base16) to define colour schemes that can be used with the `theme.palette` parameter.
 A selection of 16 palettes (10 dark, 6 light) are bundled with the theme: `apprentice`, `base16-dark`, `base16-light`, `dracula`, `gruvbox-dark`, `gruvbox-light`, `material`, `papercolor-dark`, `papercolor-light`, `solarized-dark`, `solarized-light`, `tender`, `tokyo-night-dark`, `tokyo-night-light`, `windows-95` and `windows-95-light`.
@@ -59,36 +57,28 @@ The easiest way to use other base16 styles is to place .css file from https://gi
 
 Or to define a wholly custom theme, you will need to define the following CSS variables for the following base16 colours (see [base16-dark.css](blob/main/static/css/palettes/base16-dark.css) for an example):
 
-| Base | Default colour                             | Used for            | Examples                             |
-| ---- | ------------------------------------------ | ------------------- | ------------------------------------ |
-| 00   | <span class="base00">Dark</span>           | Background          | Page background                      |
-| 01   | <span class="base01">│</span>              | Alt. background     | Content background                   |
-| 02   | <span class="base02">│</span>              | In-text backgrounds | `<pre>`, `<code>`, `<kbd>`, `<samp>` |
-| 03   | <span class="base03">│</span>              | Muted text          | `:before` & `:marker` symbols        |
-| 04   | <span class="base04">│</span>              | Alt. foreground     | Aside text                           |
-| 05   | <span class="base05">│</span>              | Foreground          | Content text                         |
-| 06   | <span class="base06">│</span>              |                     |                                      |
-| 07   | <span class="base07">Light</span>          |                     |                                      |
-| 08   | <span class="base08">Red</span>            |                     |                                      |
-| 09   | <span class="base09">Orange</span>         |                     |                                      |
-| 0A   | <span class="base0A">Yellow</span>         | Highlights          | Selected text, `<mark>`              |
-| 0B   | <span class="base0B">Green</span>          | Primary accent      | Logo                                 |
-| 0C   | <span class="base0C">Cyan</span>           | Active links        | `a:active`, `a:hover`                |
-| 0D   | <span class="base0D">Blue</span>           | Links               | `a:link`, `a:visited`                |
-| 0E   | <span class="base0E">Magenta</span>        |                     |                                      |
-| 0F   | <span class="base0F">Brown</span>          |                     |                                      |
+| Base | Default colour | Used for | Examples |
+| ---- | -------------- | -------- | -------- |
+| 00   | Dark           | Background | Page background          |
+| 01   | │              | Alt. background | Content background          |
+| 02   | │              | In-text backgrounds | `<pre>`, `<code>`, `<kbd>`, `<samp>` |
+| 03   | │              | Muted text | `:before` & `:marker` symbols |
+| 04   | │              | Alt. foreground | Aside text          |
+| 05   | │              | Foreground         | Content text         |
+| 06   | │              |          |          |
+| 07   | Light          |          |          |
+| 08   | Red            |          |          |
+| 09   | Orange         |          |          |
+| 0A   | Yellow         | Highlights | Selected text, `<mark>` |
+| 0B   | Green          | Primary accent | Logo          |
+| 0C   | Cyan           | Active links | `a:active`, `a:hover`         |
+| 0D   | Blue           | Links    | `a:link`, `a:visited`         |
+| 0E   | Magenta        |          |          |
+| 0F   | Brown          |          |          |
 
 For light mode palettes, the sequence of 00–07 should be reversed (light to dark, not dark to light).
 Note that not all colours are currently used in the theme.
 
-You you use these colours directly in content using the convenience classes `.baseXX` and `.bg-baseXX`.
-For example:
-
-```html
-<span class="base0A">Yellow text</span>
-<mark class="base0D">Text highlighted in green</mark>
-```
-
 ## Favicon
 
 risotto will automatically use favicons placed in the `static/` directory.
diff --git a/exampleSite/content/post/markdown-syntax.md b/exampleSite/content/post/markdown-syntax.md
index dcbab1b..06990d7 100644
--- a/exampleSite/content/post/markdown-syntax.md
+++ b/exampleSite/content/post/markdown-syntax.md
@@ -14,7 +14,6 @@ categories = [
 ]
 series = ["Themes Guide"]
 aliases = ["migrate-from-jekyl"]
-toc = true
 +++
 
 This article offers a sample of basic Markdown syntax that can be used in Hugo content files, also it shows whether basic HTML elements are decorated with CSS in a Hugo theme.
diff --git a/layouts/_default/single.html b/layouts/_default/single.html
index 23274ed..77abf32 100644
--- a/layouts/_default/single.html
+++ b/layouts/_default/single.html
@@ -2,6 +2,10 @@
     <header class="content__header">
         <h1>{{ .Title | markdownify }}</h1>
     </header>
+    {{ if .Params.toc }}
+    <aside>
+    </aside>
+    {{ end }}
     <div class="content__body">
         {{ .Content }}
     </div>
diff --git a/layouts/partials/footer.html b/layouts/partials/footer.html
index 268455a..7ee6434 100644
--- a/layouts/partials/footer.html
+++ b/layouts/partials/footer.html
@@ -1,2 +1,3 @@
+{{- partial "lang.html" . -}}
 <p class="copyright">{{ .Site.Copyright | markdownify }}</p>
 <p class="advertisement">Powered by <a href="https://gohugo.io/">hugo</a> and <a href="https://github.com/joeroe/risotto">risotto</a>.</p>
diff --git a/static/css/layout.css b/static/css/layout.css
index 06f69e7..d249166 100644
--- a/static/css/layout.css
+++ b/static/css/layout.css
@@ -4,10 +4,10 @@
     max-width: 64rem;
     margin: 1rem auto;
     display: grid;
-    grid-template-areas:
-      "header"
-      "body"
-      "aside"
+    grid-template-areas: 
+      "header" 
+      "body" 
+      "aside" 
       "footer";
     grid-template-columns: minmax(0, 1fr); /* https://css-tricks.com/preventing-a-grid-blowout/ */
     grid-row-gap: 2rem;
@@ -49,11 +49,6 @@
 .page__aside {
     grid-area: aside;
     color: var(--off-fg);
-    position: sticky;
-    top: 1rem;
-    right: 1rem;
-    overflow-y: auto;
-    max-height: 95vh;
 }
 
 /* Footer */
diff --git a/static/css/typography.css b/static/css/typography.css
index 086cd40..fcf63b6 100644
--- a/static/css/typography.css
+++ b/static/css/typography.css
@@ -219,37 +219,3 @@ img {
     height: auto;
 }
 
-/* Colour classes */
-.base00 { color: var(--base00); }
-.base01 { color: var(--base01); }
-.base02 { color: var(--base02); }
-.base03 { color: var(--base03); }
-.base04 { color: var(--base04); }
-.base05 { color: var(--base05); }
-.base06 { color: var(--base06); }
-.base07 { color: var(--base07); }
-.base08 { color: var(--base08); }
-.base09 { color: var(--base09); }
-.base0A { color: var(--base0A); }
-.base0B { color: var(--base0B); }
-.base0C { color: var(--base0C); }
-.base0D { color: var(--base0D); }
-.base0E { color: var(--base0E); }
-.base0F { color: var(--base0F); }
-
-.bg-base00 { background-color: var(--base00); }
-.bg-base01 { background-color: var(--base01); }
-.bg-base02 { background-color: var(--base02); }
-.bg-base03 { background-color: var(--base03); }
-.bg-base04 { background-color: var(--base04); }
-.bg-base05 { background-color: var(--base05); }
-.bg-base06 { background-color: var(--base06); }
-.bg-base07 { background-color: var(--base07); }
-.bg-base08 { background-color: var(--base08); }
-.bg-base09 { background-color: var(--base09); }
-.bg-base0A { background-color: var(--base0A); }
-.bg-base0B { background-color: var(--base0B); }
-.bg-base0C { background-color: var(--base0C); }
-.bg-base0D { background-color: var(--base0D); }
-.bg-base0E { background-color: var(--base0E); }
-.bg-base0F { background-color: var(--base0F); }
diff --git a/theme.toml b/theme.toml
index ad5f777..265e16e 100644
--- a/theme.toml
+++ b/theme.toml
@@ -8,6 +8,7 @@ demosite = "https://risotto.joeroe.io"
 
 tags = ["responsive", "minimal", "dark mode"]
 features = []
+min_version = "0.41.0"
 
 [author]
   name = "Joe Roe"