[ANNOUNCE] Git Rev News edition 51

Hi everyone,

The 51th edition of Git Rev News is now published:

  https://git.github.io/rev_news/2019/05/22/edition-51/

Thanks a lot to David Pursehouse, Luca Milanesio and Denton Liu who
contributed this month!

Enjoy,
Christian, Jakub, Markus and Gabriel.