Multiple values for a single key are not supported (ie, missing version 2 support)

[jkakar]

In section 5 the specification requires support for multiple
values with the same key:

Key names might not be unique.  OpenToken supports multiple values
for a key name by simply adding another key-value pair.

But this doesn't appear to be implemented in the opentoken gem:

irb(main):013:0> attributes_in = {"subject" => "Andre", "email" => ["[email protected]", "[email protected]"]}
=> {"subject"=>"Andre", "email"=>["[email protected]", "[email protected]"]}
irb(main):014:0> OpenToken.encode attributes_in, OpenToken::Cipher::AES_128_CBC
NoMethodError: undefined method `each_byte' for ["[email protected]", "[email protected]"]:Array
    from /Users/jkakar/src/projects/opentoken/lib/opentoken/key_value_serializer.rb:131:in `escape_value'
    from /Users/jkakar/src/projects/opentoken/lib/opentoken/key_value_serializer.rb:21:in `block in serialize'
    from /Users/jkakar/src/projects/opentoken/lib/opentoken/key_value_serializer.rb:15:in `each_pair'
    from /Users/jkakar/src/projects/opentoken/lib/opentoken/key_value_serializer.rb:15:in `serialize'
    from /Users/jkakar/src/projects/opentoken/lib/opentoken.rb:31:in `encode'
    from (irb):14
    from /Users/jkakar/.rbenv/versions/2.0.0-p353/bin/irb:12:in `<main>'

I guess that means that this implementation is based on version 1,
right? Are there plans to support version 2?

[jkakar]

Ah, I see now that the library is emitting the 1 in the version part
of the format, so I guess this isn't a bug at this stage.