Add max quantity to prevent integer overflow.
Add check to UpdateCommand to prevent removing medicine that does not exist.
Improve performance of getNewMedicineExpiry for UpdateCommand class to O(1) most of the time
List stays on current view for more convenient updating after using UpdateCommand.
Improve and add JUnit tests for UpdateCommand
Also removed Address Book Mode and Kevin's part of the user guides to be replaced with more coherent features in future update of UseGuide.
Add max quantity to prevent integer overflow. Add check to UpdateCommand to prevent removing medicine that does not exist. Improve performance of getNewMedicineExpiry for UpdateCommand class to O(1) most of the time List stays on current view for more convenient updating after using UpdateCommand. Improve and add JUnit tests for UpdateCommand
Also removed Address Book Mode and Kevin's part of the user guides to be replaced with more coherent features in future update of UseGuide.