mainline urban dev building 13

[curstwist]

Summary

SUMMARY: Content "Moves and updates 1 urban development city special to vanilla."

Purpose of change

Mainline the urban development mod.

Describe the solution

This is urban_13_dense_house_apt_house
Changes include:
Merging maps and migrating to a new palette.
Add basements.
General update to interiors with new furniture items and general upgrades.

Testing

Spawned in world.

Additional context

basement before:

basement after:

ground before:

ground after:

z+1 before:

z+1 after:

z2 before:

z2 after:

z3 before:

z3 after:

z4 before:

z4 after:

[geophree]

I don't see a way to get into the right-side basement, is that intentional?