D934: rebase: add an experimental.showhashchanges config to show hash changes

[pulkit (Pulkit Goyal)]

pulkit planned changes to this revision.
pulkit added a comment.




REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D934

To: pulkit, #hg-reviewers
Cc: quark, dlax, durin42, mercurial-devel