JSON output is now indented by default. Closes #350.

src/core/Dish.mjs

@@ -169,7 +169,7 @@ class Dish {
                 this.value = this.value instanceof BigNumber ? Utils.strToByteArray(this.value.toFixed()) : [];
                 break;
             case Dish.JSON:
-                this.value = this.value ? Utils.strToByteArray(JSON.stringify(this.value)) : [];
+                this.value = this.value ? Utils.strToByteArray(JSON.stringify(this.value, null, 4)) : [];
                 break;
             case Dish.FILE:
                 this.value = await Utils.readFile(this.value);