Release of Version 0.3.2

-> revision of labels and descriptions of concepts. Also in multiple languages -> closes #90 #88 #87 #64 #47
-> removed Friend of a Friend property due to problems and substituted with vcard nad schema.org -> closed #11
-> version iris changed to be dereferenceable -> closes #80

Release of version 0.3.1 of BOT

Changes as documented in https://w3id.org/bot/bot.html