April 01, 2015
  Branch: refs/heads/master
  Home:   https://github.com/D-Programming-Language/phobos
  Commit: 3c78fe388cd0269dc1f082f9f4bbd4181cca57e8
      https://github.com/D-Programming-Language/phobos/commit/3c78fe388cd0269dc1f082f9f4bbd4181cca57e8
  Author: rsw0x <rsw0x@rsw0x.me>
  Date:   2015-04-01 (Wed, 01 Apr 2015)

  Changed paths:
    M std/container/rbtree.d

  Log Message:
  -----------
  Mark RBTree.length as const

add unit tests for constness


  Commit: ee161abf43973aa57a7e5ef950613a64ec8df27f
      https://github.com/D-Programming-Language/phobos/commit/ee161abf43973aa57a7e5ef950613a64ec8df27f
  Author: Steven Schveighoffer <schveiguy@yahoo.com>
  Date:   2015-04-01 (Wed, 01 Apr 2015)

  Changed paths:
    M std/container/rbtree.d

  Log Message:
  -----------
  Merge pull request #3134 from rsw0x/iss14234

Mark RBTree.length as const


Compare: https://github.com/D-Programming-Language/phobos/compare/634bf28d908e...ee161abf4397