Bump version 0.18.0.

Author: ilopX

CHANGELOG.md

@@ -1,3 +1,6 @@
+## 0.18.0
+- Add Memento Editor.
+
 ## 0.17.16 - refactoring
 - Simplifying the ternary construction.
 - Remove multiline comment from main README.

README.md

@@ -15,7 +15,7 @@ It contains **Dart** examples for all classic **GoF** design patterns.
     - [ ] Interpreter
     - [ ] **Iterator**
     - [ ] **Mediator**
-    - [x] **Memento** - [[Conceptual](https://github.com/RefactoringGuru/design-patterns-dart/tree/master/patterns/memento/conceptual)]
+    - [x] **Memento** - [[Conceptual](https://github.com/RefactoringGuru/design-patterns-dart/tree/master/patterns/memento/conceptual)] [[Memento Editor](https://github.com/RefactoringGuru/design-patterns-dart/tree/master/patterns/memento/memento_editor)] 
     - [x] **Observer** - [[Open-Close Editor Events](https://github.com/RefactoringGuru/design-patterns-dart/tree/master/patterns/observer/open_close_editor_events)] [[AppObserver](https://github.com/RefactoringGuru/design-patterns-dart/tree/master/patterns/observer/app_observer)] [[Subscriber Flutter Widget](https://github.com/RefactoringGuru/design-patterns-dart/tree/master/patterns/observer/subscriber_flutter_widget)]
     - [ ] **State**
     - [ ] **Template Method**
@@ -33,7 +33,7 @@ It contains **Dart** examples for all classic **GoF** design patterns.
 ## Requirements
 
 The examples were written in **Dart 2.15**.
-Some complex examples require **Flutter 2.15.0**.
+Some complex examples require **Flutter 2.12**.
 
 ## Contributor's Guide
 

pubspec.yaml

@@ -1,6 +1,6 @@
 name: design_patterns_dart
 description: Dart examples for all classic GoF design patterns.
-version: 0.17.16
+version: 0.18.0
 homepage: https://refactoring.guru/design-patterns
 repository: https://github.com/RefactoringGuru/design-patterns-dart
 issue_tracker: https://github.com/RefactoringGuru/design-patterns-dart/issue