D7231: relnotes: copy "next" to "5.2" and clear "next"

[martinvonz (Martin von Zweigbergk)]

martinvonz added a comment.


  This is meant for the stable branch

REPOSITORY
  rHG Mercurial

CHANGES SINCE LAST ACTION
  https://phab.mercurial-scm.org/D7231/new/

REVISION DETAIL
  https://phab.mercurial-scm.org/D7231

To: martinvonz, #hg-reviewers
Cc: mercurial-devel