Add Estonian (ee) flavor with zipcode, counties and personal ID code fields
Add Latvian (lv) flavor with Latvian municipalities

110 municipalities and 9 republican cities.

Translations will come later.
Add Latvian (lv) postal code field (LV-XXXX)
Add normalization to Lithuanian (lt) postal code field

Both "12345" and "LT-12345" now get normalized to "LT-12345", like the
Latvian postal code.
Add Latvian (lv) personal code field (XXXXXX-XXXXX)
Add Latvian (lv) translations for own municipalities

I don't speak Latvian myself, but I know these are correct.
Estonian translations, including areas of Russia and Latvia

* Municipalities & republican cities of Latvia
* Areas of Russia
* Estonian form errors
* Many more additions

Swedish "Gotland" has an Estonian translation because it's the largest
island in the Baltic Sea.