Bump versions for rc8 (#704)

examples/lib/stories/effects/infinite_effect.dart

@@ -23,13 +23,11 @@ class InfiniteEffectGame extends BaseGame with TapDetector {
   SquareComponent redSquare;
   SquareComponent orangeSquare;
 
-  InfiniteEffectGame()
-      : greenSquare = makeSquare(green),
-        redSquare = makeSquare(red),
-        orangeSquare = makeSquare(orange) {
-    add(greenSquare);
-    add(redSquare);
-    add(orangeSquare);
+  @override
+  Future<void> onLoad() async {
+    add(greenSquare = makeSquare(green));
+    add(redSquare = makeSquare(red));
+    add(orangeSquare = makeSquare(orange));
   }
 
   @override

examples/lib/stories/effects/move_effect.dart

@@ -9,7 +9,8 @@ import '../../commons/square_component.dart';
 class MoveEffectGame extends BaseGame with TapDetector {
   SquareComponent square;
 
-  MoveEffectGame() {
+  @override
+  Future<void> onLoad() async {
     add(
       square = SquareComponent()..position = Vector2.all(100),
     );

examples/lib/stories/effects/rotate_effect.dart

@@ -12,7 +12,8 @@ import '../../commons/square_component.dart';
 class RotateEffectGame extends BaseGame with TapDetector {
   SquareComponent square;
 
-  RotateEffectGame() {
+  @override
+  Future<void> onLoad() async {
     add(
       square = SquareComponent()
         ..position = Vector2.all(200)

examples/lib/stories/effects/scale_effect.dart

@@ -11,7 +11,8 @@ class ScaleEffectGame extends BaseGame with TapDetector {
   SquareComponent square;
   bool grow = true;
 
-  ScaleEffectGame() {
+  @override
+  Future<void> onLoad() async {
     add(
       square = SquareComponent()
         ..position = Vector2.all(200)

examples/lib/stories/effects/sequence_effect.dart

@@ -11,7 +11,8 @@ final green = Paint()..color = const Color(0xAA338833);
 class SequenceEffectGame extends BaseGame with TapDetector {
   SquareComponent greenSquare;
 
-  SequenceEffectGame() {
+  @override
+  Future<void> onLoad() async {
     add(
       greenSquare = SquareComponent()
         ..paint = green

packages/flame/CHANGELOG.md

@@ -1,6 +1,8 @@
 # CHANGELOG
 
 ## [next]
+
+## 1.0.0-rc8
  - Migrate to null safety
  - Refactor the joystick code
  - Fix example app

packages/flame/pubspec.yaml

@@ -1,11 +1,12 @@
 name: flame
 description: A minimalist Flutter game engine, provides a nice set of somewhat independent modules you can choose from.
-version: 1.0.0-rc7-nullsafety.0
+version: 1.0.0-rc8
 homepage: https://github.com/flame-engine/flame
 
 dependencies:
   flutter:
     sdk: flutter
+  meta: ^1.3.0
   ordered_set: ^3.0.0-nullsafety
   vector_math: '>=2.1.0-nullsafety <3.0.0'