Mild fixes to issues I noticed on push

README.md

@@ -1,16 +1,3 @@
 # dartterm
 
-A new Flutter project.
+Roguelike stuff in Dart.
-
-## Getting Started
-
-This project is a starting point for a Flutter application.
-
-A few resources to get you started if this is your first Flutter project:
-
-- [Lab: Write your first Flutter app](https://docs.flutter.dev/get-started/codelab)
-- [Cookbook: Useful Flutter samples](https://docs.flutter.dev/cookbook)
-
-For help getting started with Flutter development, view the
-[online documentation](https://docs.flutter.dev/), which offers tutorials,
-samples, guidance on mobile development, and a full API reference.

lib/assets.dart

@@ -1,4 +1,3 @@
-import 'dart:developer';
 import 'dart:ui' as ui;
 
 import 'package:flutter/services.dart';
@@ -7,7 +6,7 @@ class Assets {
   final Map<String, ui.Image> _loaded = {};
   final Set<String> _waiting = {};
 
-  Future<ui.Image> getImageAsync(String name) async {
+  Future<ui.Image> _getImageAsync(String name) async {
     final assetImageByteData = await rootBundle.load(name);
     final codec =
         await ui.instantiateImageCodec(assetImageByteData.buffer.asUint8List());
@@ -20,7 +19,7 @@ class Assets {
   ui.Image? getImageIfAvailable(String name) {
     if (!_waiting.contains(name)) {
       _waiting.add(name);
-      getImageAsync(name);
+      _getImageAsync(name);
     }
     return _loaded[name];
   }