Released 1.5.1

Released 1.5

Released 1.4.1

* **New Signing Key** Release 1.4.1 is using a different key than normal with
  fingerprint: 7C6B 7C5D 5E2B 6356 A926 F04F 6E3C BCE9 3372 DCFA
* Fixed issues with installing from pybundle files (Pull pypa#1116).
* Fixed error when sysconfig module throws an exception (Pull pypa#1095).
* Don't ignore already installed pre-releases (Pull pypa#1076).
* Fixes related to upgrading setuptools (Pull pypa#1092).
* Fixes so that --download works with wheel archives (Pull pypa#1113).
* Fixes related to recognizing and cleaning global build dirs (Pull pypa#1080).

Awesome release with wheel support and more.

Quickfix release for 1.3.

SSL support, list command and more bugifxes.

Quick bugfix release for a regression introducded in 1.2.

Fixed a failing test.

Major bugfix release.