chore(README): update future plans

Author: tmlmt

README.md

@@ -91,9 +91,8 @@ console.log(shoppingList.categories);
 
 I plan to further develop features depending on the needs I will encounter in using this library in a practical application. The current todo includes:
 
-- Range values for ingredient quantities and timers. See issue #3
-- Preserved fractions for ingredients quantities. See issue #6
-- Ingredients aliases. See issue #5
+- Ingredients aliases. See issue tmlmt/cooklang-parser#5
+- Cookware quantities
 
 ## Test coverage