Release notes:
http://forums.proletariat.com/t/world-zombination-3-8-release-notes/8429
http://forums.proletariat.com/t/world-zombination-3-7-release-notes-with-explanations/6372
http://forums.proletariat.com/t/world-zombination-3-6-release-notes-with-explanations/5217
http://forums.proletariat.com/t/world-zombination-3-5-release-notes-with-explanations/4723
http://forums.proletariat.com/t/world-zombination-3-4-release-notes-with-explanations/4116
http://forums.proletariat.com/t/world-zombination-3-3-release-notes-with-explanations/2274
http://forums.proletariat.com/t/world-zombination-3-2-release-notes/1455