auto update pw on option change

js/customElements/pwgen.js

@@ -22,6 +22,20 @@ class PasswordGenerator extends HTMLElement {
 
         pwlen.oninput = () => {
             pwlenSpan.innerText = pwlen.value;
+            button.click();
+        }
+
+        includeNum.onchange = () => {
+            button.click();
+        }
+        includeBigChar.onchange = () => {
+            button.click();
+        }
+        includeSmallChar.onchange = () => {
+            button.click();
+        }
+        includeSpecialChat.onchange = () => {
+            button.click();
         }
 
         button.onclick = () => {