module Honeybadger::Config::Env

def self.new(env = ENV)
  hash = {}
  env.each_pair do |k,v|
    next unless k.match(CONFIG_KEY)
    next unless config_key = CONFIG_MAPPING[$1]
    type = OPTIONS[config_key][:type]
    next if IGNORED_TYPES.include?(type)
    hash[config_key] = cast_value(v, type)
  end
  hash
end