track progression

Author: Nicolas Hart

README.md

@@ -8,6 +8,15 @@ Based on Bob Nystrom's great book [Crafting Interpreters](https://github.com/mun
 
 ⚠️ This project is still in progress.
 
+## Progression
+
+- [x] 4. Scanning
+- [x] 5. Representing Code
+- [x] 6. Parsing Expressions
+- [x] 7. Evaluating Expressions
+- [x] 8. Statements and State
+- [ ] 9. Control Flow
+
 ## Installation
 
 Run the following command after cloning the repository: