[elpa] externals/xr updated (513e815 -> 549cbc5)

[Mattias Engdegård]

mattiase pushed a change to branch externals/xr.

      from  513e815   Run with case-fold-search set to nil
       new  d0c434d   Add missing xr-lint unit test
       new  efc0663   Improved `xr-pp' doc string
       new  549cbc5   Detect duplicated branches in alternatives


Summary of changes:
 xr-test.el |  4 ++++
 xr.el      | 14 +++++++++-----
 2 files changed, 13 insertions(+), 5 deletions(-)