update homepage for 3.1.3

docs/html/S16homepage/index.html

@@ -22,9 +22,9 @@ <h1 class="title">Sigma16 home page</h1>
 </header>
 <p>Sigma16 is a computer architecture designed for research and teaching in computer systems. This application provides a complete environment for experimenting with the architecture.</p>
 <div class="quickstartbox">
-<a href="https://jtod.github.io/home/Sigma16/releases/3.1.2/app/Sigma16.html">Click to run Sigma16 in your browser</a>
+<a href="https://jtod.github.io/home/Sigma16/releases/3.1.3/app/Sigma16.html">Click to run Sigma16 in your browser</a>
 </div>
-<p>The <a href="https://jtod.github.io/home/Sigma16/releases/3.1.2/docs/html/userguide/userguide.html">User Guide</a> includes documentation of the architecture, assembly language, programming, as well as tutorials.</p>
+<p>The <a href="https://jtod.github.io/home/Sigma16/releases/3.1.3/docs/html/userguide/userguide.html">User Guide</a> includes documentation of the architecture, assembly language, programming, as well as tutorials.</p>
 <h2 id="introduction-to-the-architecture">Introduction to the architecture</h2>
 <p>This architecture is simpler than most commercial products making it a good vehicle for teaching and experimentation.</p>
 <ul>
@@ -57,6 +57,7 @@ <h2 id="running-the-app">Running the app</h2>
 <h3 id="releases">Releases</h3>
 <p>The link in the red box at the top of this page runs the latest release, which is the top one in the list below. Links to specific releases are given below. Don’t bookmark a specific version unless you need it for a specific reason: that will prevent you from accessing the latest version. Previous versions are guaranteed to have either missing features, missing documentation, bugs, or all of the above. After all, that’s the reason that old versions get replaced by newer ones!</p>
 <ul>
+<li><p><a href="./releases/3.1.2/app/Sigma16.html">launch 3.1.3</a> and <a href="https://github.com/jtod/Sigma16/releases/tag/v3.1.3">download 3.1.2</a></p></li>
 <li><p><a href="./releases/3.1.2/app/Sigma16.html">launch 3.1.2</a> and <a href="https://github.com/jtod/Sigma16/releases/tag/v3.1.2">download 3.1.2</a></p></li>
 <li><p><a href="./releases/3.1.1/app/Sigma16.html">launch 3.1.1</a> and <a href="https://github.com/jtod/Sigma16/releases/tag/v3.1.1">download 3.1.1</a></p></li>
 <li><p><a href="./releases/3.1.0/app/Sigma16.html">launch 3.1.0</a> and <a href="https://github.com/jtod/Sigma16/releases/tag/v3.1.0">download 3.1.0</a></p></li>

docs/src/S16homepage/index.md

@@ -5,10 +5,10 @@ in computer systems. This application provides a complete environment
 for experimenting with the architecture.
 
 <div class="quickstartbox"> [Click to run Sigma16 in your
- browser](https://jtod.github.io/home/Sigma16/releases/3.1.2/app/Sigma16.html)</div>
+ browser](https://jtod.github.io/home/Sigma16/releases/3.1.3/app/Sigma16.html)</div>
 
 The [User
-Guide](https://jtod.github.io/home/Sigma16/releases/3.1.2/docs/html/userguide/userguide.html)
+Guide](https://jtod.github.io/home/Sigma16/releases/3.1.3/docs/html/userguide/userguide.html)
 includes documentation of the architecture, assembly language,
 programming, as well as tutorials.
 
@@ -119,6 +119,9 @@ have either missing features, missing documentation, bugs, or all of
 the above. After all, that’s the reason that old versions get
 replaced by newer ones!
 
+* [launch 3.1.3](./releases/3.1.2/app/Sigma16.html) and [download
+ 3.1.2](https://github.com/jtod/Sigma16/releases/tag/v3.1.3)
+
 * [launch 3.1.2](./releases/3.1.2/app/Sigma16.html) and [download
  3.1.2](https://github.com/jtod/Sigma16/releases/tag/v3.1.2)