depend on virtus
add UUIDEntity.from_h
UUIDEntity: sport a random UUID
add proper UUIDEntity#== behaviour
add UUIDEntity#to_h
Project: switch to UUIDEntity
Task: switch to UUIDEntity
make Addr#to_h return a String prot
Client: switch to UUIDEntity
Registration: switch to UUIDEntity
Result: switch to UUIDEntity
Repo spec: switch to UUIDEntity
good-bye, UUIDObject