D1621: transaction: split changes['phases'] into sets for src and target phase

[quark (Jun Wu)]

quark accepted this revision.
quark added a comment.


  That said, I think the usage of list of sets is smart and this change looks good to me.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D1621

To: joerg.sonnenberger, #hg-reviewers, quark
Cc: quark, mercurial-devel