=== v. 5 ===

* Make the code Python 3-compatible.
* Really add support for Boost 1.58.

=== v. 4 ===

* Add support for Boost 1.56 to 1.58 (yet another change in Unordered).

=== v. 3 ===

* Stop mapping real Boost version to a pretty printer version; add
  explicit code for every Boost version instead.
* Add support for Boost 1.52 and later (Boost.Unordered changed again).

=== v. 2 ===

* Add support for use with Boost 1.48 and later (Boost.Unordered
  changed in that version).

=== v. 1 ===

* Initial release.
