modified commands:
add: now takes empty values in email and address fields
edit: when prefix is specified to optional fields but without value, e.g. "edit x e/ ", the corresponding optional field will be cleared of its value.
Tests are updated to remove empty address as invalid address.
1 test added for the behaviour of adding empty address.
More tests pending on edit.
modified commands:
add: now takes empty values in email and address fieldsedit: when prefix is specified to optional fields but without value, e.g. "edit x e/ ", the corresponding optional field will be cleared of its value.Tests are updated to remove empty address as invalid address. 1 test added for the behaviour of adding empty address. More tests pending on edit.