Add a 'village' zoom level at 13 between town and neighbourhood
and a all locality-like objects for zoom 15. These zoom levels had
the same behaviour as the lower level so far. However, the distinction
for village and locality may be useful at times.
5 | state
8 | county
10 | city
- 14 | suburb
+ 12 | town / borough
+ 13 | village / suburb
+ 14 | neighbourhood
+ 15 | locality
16 | major streets
17 | major and minor streets
18 | building
9 => 12,
10 => 17, // City
11 => 17,
- 12 => 18, // Town / Village
- 13 => 18,
- 14 => 22, // Suburb
- 15 => 22,
+ 12 => 18, // Town
+ 13 => 19, // Village
+ 14 => 22, // Neighbourhood
+ 15 => 25, // Locality
16 => 26, // major street
17 => 27, // minor street
18 => 30, // or >, Building