https://wikimediafoundation.org/2019/04/11/a-german-court-forced-us-to-remove-part-of-a-wikipedia-articles-history-heres-what-that-means/
https://harpers.org/archive/2019/04/more-than-a-data-dump-julian-assange/
http://science.sciencemag.org/content/364/6436/eaau8650
https://www.amusingplanet.com/2019/04/dagen-h-day-sweden-switched-traffic.html
https://keybase.io/docs/proof_integration_guide
https://news.ycombinator.com/item?id=19633212
https://blog.acolyer.org/2019/04/10/dont-trust-the-locals-investigating-the-prevalence-of-persistent-client-side-cross-site-scripting-in-the-wild/
https://arstechnica.com/information-technology/2019/04/serious-flaws-leave-wpa3-vulnerable-to-hacks-that-steal-wi-fi-passwords/
https://blog.knatten.org/2018/03/09/lvalues-rvalues-glvalues-prvalues-xvalues-help/