D3990: linelog: add a Python implementation of the linelog datastructure

[indygreg (Gregory Szorc)]

indygreg accepted this revision.
indygreg added a comment.
This revision is now accepted and ready to land.


  I'm OK breaking out my rubber stamp for this.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3990

To: durin42, #hg-reviewers, indygreg
Cc: indygreg, mercurial-devel