Creates a new Web::Scraper::Config instance.
The first arguments is either a hashref that represents a config, or a
filename to the config. The config file can be in any format that Config::Any
understands as long as it returns a hash thats conformant to the
The second argument (options) is optional, and is currently only used to
provider callbacks to be called from the scraper. When Web::Scraper::Config
encounters an element in the form of:
then that is replaced by the corresponding callback specified in the