Datamapper DataMapper → 0.10.0

As per the title, this option (which was present in v0.9.x) is missing in v0.10.0 which means datamapper is not able to find the target in the through model if it has a different name than has been used in the through declaration. Not a very clear explanation probably - here's some code to illustrate expected behavior:

class User
  include DataMapper::Resource
  
  property :id, Serial
end
 
class Paper
  include DataMapper::Resource
  
  property :id, Serial
  
  has n, :author_joins
  has n, :authors,      User,   :through      => :author_joins, 
                                :remote_name  => :user, 
                                :child_key    => [:paper_id]
end
 
class AuthorJoin
  include DataMapper::Resource
  
  property :id,       Serial
  property :user_id,  Integer
  property :paper_id, Integer
  
  belongs_to :user
  belongs_to :paper
end

user = User.create!
paper = Paper.create!
paper.authors << user   # => NameError: Cannot find target relationship authors or author in AuthorJoin within the :default repository

This has the potential to break existing code when upgrading.

I've added a short script which can be run to check if the remote_name option is supported (not that it's a full spec to check behavior fully).