js tweaks

Author: Archmonger

.prettierrc

@@ -0,0 +1,4 @@
+{
+  "proseWrap": "never",
+  "trailingComma": "all"
+}

src/js/src/index.js

@@ -13,7 +13,8 @@ export function bind(node) {
 }
 
 export function History({ onChange }) {
-  // Capture changes to the browser's history
+  // Capture browser "history go back" action and tell the server about it
+  // Note: Browsers do not allow you to detect "history go forward" actions.
   React.useEffect(() => {
     const listener = () => {
       onChange({