def tags_rename(from_name_or_tag, to_name_or_tag)
      params = prepare_tags_rename_params(from_name_or_tag, to_name_or_tag)
      response = request(API_PATH_TAGS_RENAME, params)
      parse_and_eval_execution_response(response.body)
    end
def tags_rename(from_name_or_tag, to_name_or_tag)
      params = prepare_tags_rename_params(from_name_or_tag, to_name_or_tag)
      response = request(API_PATH_TAGS_RENAME, params)
      parse_and_eval_execution_response(response.body)
    end
Renames an existing tag with a new tag name.

   # rename from a tag
   d.bundles_set(WWW::Delicious::Tag.new('old'), WWW::Delicious::Tag.new('new'))

   # rename from a string
   d.bundles_set('old', 'new')


 Raises::  WWW::Delicious::Error
 Raises::  WWW::Delicious::HTTPError
 Raises::  WWW::Delicious::ResponseError