bump to v8.5.1

README.md

@@ -1,5 +1,5 @@
 # Scrawl-canvas Library 
-Version: `8.5.0 - 19 Feb 2021` 
+Version: `8.5.1 - 26 Feb 2021` 
 
 Scrawl-canvas website: [scrawl-v8.rikweb.org.uk](https://scrawl-v8.rikweb.org.uk).
 
@@ -46,7 +46,7 @@ There are three main ways to include Scrawl-canvas in your project:
 2. Unzip the file to a folder in your project. 
 3. Import the library into the script code where you will be using it.
 
-Alternatively, a zip package of the v8.5.0 files can be downloaded from this link: [scrawl.rikweb.org.uk/downloads/scrawl-canvas_8-5-0.zip](https://scrawl.rikweb.org.uk/downloads/scrawl-canvas_8-5-0.zip) - this package only includes the minified file.
+Alternatively, a zip package of the v8.5.1 files can be downloaded from this link: [scrawl.rikweb.org.uk/downloads/scrawl-canvas_8-5-1.zip](https://scrawl.rikweb.org.uk/downloads/scrawl-canvas_8-5-1.zip) - this package only includes the minified file.
 
 ```html
 <!-- Hello world -->
@@ -95,7 +95,7 @@ Alternatively, a zip package of the v8.5.0 files can be downloaded from this lin
 This will pull the requested npm package directly into your web page:
 ```html
 <script type="module">
-    import scrawl from 'https://unpkg.com/scrawl-canvas@8.5.0';
+    import scrawl from 'https://unpkg.com/scrawl-canvas@8.5.1';
     [...]
 </script>
 ```

demo/canvas-035.html

@@ -145,6 +145,7 @@ <h4>Test purpose</h4>
       <li>Check that all patterns react appropriately as each of the six pattern matrix values is manipulated (in real time)</li>
     </ul>
 
+    <p><b>Known issue:</b> The Firefox browser has a longstanding bug where it only recognises the 'repeat' and 'no-repeat' values for the Pattern `repeat` attribute. Also, the 'no-repeat' value will produce faulty output.</p>
     <p><a href="../docs/demo/canvas-035.html">Annotated code</a></p>
   </div>