Change initializer to support SSLContext.

Maintains backwards compatibility with the previous constructor
signature by handling the address_family parameter and storing it into
the options hash.

Requires m247/epp-client#5 support.
Replace OldApi#create contact & host handling.

Use the #name property instead of #id to avoid Ruby 1.8 Object#id
deprecation warnings.
OldApi#create treat #pending? as #success?