make cropper a bit bigger so we can scale down instead of having to scale up to 128×128

includes/style.less

@@ -120,10 +120,6 @@ textarea {
     position: relative;
 }
 
-#crop canvas {
-    height: 32vh;
-}
-
 #preview {
     width: 256px;
     height: 256px;

script.js

@@ -78,7 +78,7 @@ async function run() {
     const textareaGameDataInput  = el("game-data");
     const textareaGameDataOutput = el("output");
 
-    const cropper = new Cropper({ width: 128, height: 128 });
+    const cropper = new Cropper({ width: 192, height: 192 });
     let cropperRendered = false;
 
     // hide all pages except start page