I updated my town emulator and moved it to CityMania. It now can save layouts on website and has a bunch of new options.
Loading layouts from strings (old format) still works but is hidden (press
l key) and may be removed in future so if you have any move them to website.
Also created a separate topic about "allow houses in turn corners" experimental option.
P.S. Definitely check road symmetry in "more options" before building any symmetric layout.
UPD Added experimental benchmark tool (
b key). Allows to emulate growth of many towns and see population and houses distribution.