D4529: narrow: mark wire proto capability names experimental and versioned

[martinvonz (Martin von Zweigbergk)]

martinvonz added a comment.


  In https://phab.mercurial-scm.org/D4529#69177, @indygreg wrote:
  
  > Unfortunately we likely can never ship either the `narrow` or `ellipsis` capability as stable because it would confuse 4.7 clients, which will presumably have a different understanding of what `narrow` and `ellipsis` mean. But at least now it is clear from the strings that the feature is experimental and we have a way of versioning its semantics until it stabilizes.
  
  
  Note that the "narrow" and "ellipses" wire protocol capabilities were introduced earlier today (https://phab.mercurial-scm.org/D4521), so no released version has them.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D4529

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