v0.6.0

Changelog:

• API change: Remove UUID support (#9).
  uhlc::ID is still a non-zero u128, but not necessarily a UUID. As a consequence:
  • The uhlc::ID::from(uuid: Uuid) operation has been removed.
    An ID can still be created from an Uuid as such:
    let id = ID::try_from([uuid.to_bytes_le()](uuid::Uuid::new_v4())).unwrap()
  • The uhlc::ID::as_slice(&self) operation has been removed.
    A minimal slice (i.e.: only non-zero bytes) of the le-encoded ID can be retrieved as such:
    let id_as_slice = id.to_le_bytes()[..id.size()]
  • The uhlc::ID::to_le_bytes(&self) operation has been added
  • The uhlc::ID::rand() -> Self operation has been added