D3665: graph: improve graph output by using Unicode characters

[indygreg (Gregory Szorc)]

indygreg added a comment.


  I installed Dejavu Sans Mono from https://dejavu-fonts.github.io/ and it works great!

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D3665

To: johnstiles, #hg-reviewers
Cc: indygreg, smf, yuja, mercurial-devel