[GNC] Using GC for Property Management

[flywire]

* https://wiki.gnucash.org/wiki/Using_GnuCash#Printing_a_Rental_Report
* https://github.com/dawansv/gnucash-custom-reports

JC wrote:

> I really wished that GC would have the option to link Vendor/Customer to a
> transaction without creating a bill or invoice.  Any future development
> plans for this feature?


Yeah, no cash accounting for business sucks.