1.0.20

• update config files from fivefilters/ftr-site-config
  • update .orf.at.txt
  • add allafrica.com.txt
  • add arstechnica.co.uk.txt
  • update brainpickings.org.txt
  • update derstandard.at.txt
  • add drgoulu.com.txt
  • add keyboardmag.com.txt
  • add lenta.ru.txt
  • add lithub.com.txt
  • update lwn.net.txt
  • add o6asan.com.txt
  • update orf.at.txt
  • update smbc-comics.com.txt
  • update theatlantic.com.txt