May 25, 2013
  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: a2c90662822673f235f2a8664e07012cafb68eb9
      https://github.com/D-Programming-Language/phobos/commit/a2c90662822673f235f2a8664e07012cafb68eb9
  Author: Walter Bright <walter@walterbright.com>
  Date:   2013-05-25 (Sat, 25 May 2013)

  Changed paths:
    M std/random.d

  Log Message:
  -----------
  immutable should be an enum


  Commit: e8c88a54e73925868f3e489a940b13b32120eb99
      https://github.com/D-Programming-Language/phobos/commit/e8c88a54e73925868f3e489a940b13b32120eb99
  Author: Andrej Mitrovic <andrej.mitrovich@gmail.com>
  Date:   2013-05-25 (Sat, 25 May 2013)

  Changed paths:
    M std/random.d

  Log Message:
  -----------
  Merge pull request #1306 from WalterBright/toenum

immutable should be an enum


Compare: https://github.com/D-Programming-Language/phobos/compare/96c51fae9b12...e8c88a54e739