undefined method `each_pair' for nil:NilClass

[perlun]

Similar to #6:

NoMethodError: undefined method `each_pair' for nil:NilClass
  http/cookie_jar/abstract_store.rb:50:in `initialize'
    default_options.each_pair { |key, default|
  http/cookie_jar.rb:38:in `new'
    base.implementation(value).new(*args)
  http/cookie_jar.rb:38:in `get_impl'
    base.implementation(value).new(*args)
  http/cookie_jar.rb:74:in `initialize'
    @store = get_impl(AbstractStore, opthash[:store], opthash)

I think it's the automatic loading that is the problem. We should have an option to disable it, for applications that prefer stability, or better yet IMHO, get rid of it altogether.