Update documentation to include random matches, insert Windows 10 notice and update donation links

_includes/donate.html

@@ -12,7 +12,10 @@
                 and I decided to make it open source because I thought it could be useful to many people.
             </p>
             <p class="bigger">If you liked the project, please consider making a small donation, it really helps :)</p>
-            <a class="btn btn-lg" target="_blank" href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=FHNLR5DRS267E&source=url" role="button">Donate with PayPal</a>
+            
+            
+            <a target="_blank" href="https://github.com/sponsors/federico-terzi" role="button"><img src="/assets/images/githubsponsor.png" class="mbtn" /></a>
+            <a target="_blank" href="https://www.paypal.com/cgi-bin/webscr?cmd=_s-xclick&hosted_button_id=FHNLR5DRS267E&source=url" role="button"><img src="/assets/images/paypal.png" class="mbtn" /></a>
         </div>
     </div>
 </div>

_sass/_colors.scss

@@ -5,4 +5,5 @@ $blackColor: #2d3436;
 $veryBlackColor: #202426;
 $greenDark: #00372c;
 $yellowColor: #fdcb6e;
-$orangeColor: #e17055;
+$orangeColor: #e17055;
+$pinkColor: #e84393;

_sass/_donate.scss

@@ -25,7 +25,6 @@
     .btn {
         font-weight: 700;
         font-size: 1.2em;
-        background-color: $orangeColor;
         color: white !important;
         padding: 10px 25px 10px 25px;
         border-radius: 40px;
@@ -35,4 +34,9 @@
             font-size: 1.3em;
         }
     }
+
+    .mbtn {
+        height: 60px;
+        display: inline;
+    }
 }

docs/matches.md

@@ -303,4 +303,27 @@ found in the [official chrono documentation](https://docs.rs/chrono/0.3.1/chrono
       params:
         format: "%H:%M"
 ```
-{% endraw %}
+{% endraw %}
+
+### Random Extension
+
+Introduced in version 0.4.1, the **Random Extension** can be used to write non-deterministic replacement texts. Said in other words, you can now specify a set of possible expansions for a match, useful to avoid repetitions. 
+
+You can use this feature by declaring a variable of type `random` and then passing a number of `choices` as a parameter:
+
+{% raw %}
+```yaml
+  - trigger: ":quote"
+    replace: "{{output}}"
+    vars:
+      - name: output
+        type: random
+        params:
+          choices:
+            - "Every moment is a fresh beginning."
+            - "Everything you can imagine is real."
+            - "Whatever you do, do it well."
+```
+{% endraw %}
+
+In this case, typing `:quote` will expand randomly to one of the tree quotes.

install/win.md

@@ -2,7 +2,7 @@
 title: Install on Windows
 layout: docs
 ---
-The easiest way to install espanso on Windows is by using the official installer.
+The easiest way to install espanso on Windows is by using the official installer.  **Note: espanso currently supports Windows 10 only**.
 
 ### Using the Installer