Alpha 4 patch 3 - April 9

Added/changed:
Can now relocate a family to another house
Slightly reduced tailors productivity
Added a few more export options

Fixed:
Some weird radioactive plants were growing on the gardens
Crash after pig wrongfully slaughtered while being relocated
It was too hard to keep hay and water on a farm
Land tax was calculated wrong for nearly triangular gardens
Some people were buried under the last name of their son-in-law
Wealth tax controls didn't work properly
Cows could be brought on a pasture that's still being harvested
Laborers had troubles delivering salt to fishing docks