[perl6/specs] 71fd6d: Introduce $a (+=) 1 as sugar for cas $a, {$_ + 1}

[GitHub]

  Branch: refs/heads/master
  Home:   https://github.com/perl6/specs
  Commit: 71fd6d3abb1c5b360eae4d424a342bc6a0cb03da
      
https://github.com/perl6/specs/commit/71fd6d3abb1c5b360eae4d424a342bc6a0cb03da
  Author: Elizabeth Mattijsen <l...@dijkmat.nl>
  Date:   2013-11-10 (Sun, 10 Nov 2013)

  Changed paths:
    M S17-concurrency.pod

  Log Message:
  -----------
  Introduce $a (+=) 1 as sugar for cas $a, {$_ + 1}