Add custom tags, labels, or properties to expenses

Please add the ability to add custom tags so I can tag properties and report on them individually (e.g., tracking rental expenses)
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Use cases:
"The ability to tag expenses (like classes) like in quickbooks. Right now I have to create a new category for each property/expense type, but if I could have one expense type then just tag the property, that would save so much time!"

keywords: tag expenses, label expense