2017-06-30

Changed

• #[builder(default)] and #[builder(default="...")] at the struct level
  change their behaviour and construct a default value for the struct,
  instead of all fields individually.
• builder fields are no longer public by default; Fields can be explicitly
  made public at the struct or field level using the new attribute:
  #[builder(field(public))]

Removed

• removed previously deprecated syntax #[builder(setter_prefix="with")],
  please use #[builder(setter(prefix="with"))] instead