Released v8.1.0 * Implement PEP 513, which adds support for the manylinux1 platform tag, allowing carefully compiled binary wheels to be installed on compatible Linux platforms. * Allow wheels which are not specific to a particular Python interpreter but which are specific to a particular platform (:issue:`3202`). * Fixed an issue where ``call_subprocess`` would crash trying to print debug data on child process failure (:issue:`3521`, :pull:`3522`). * Exclude the wheel package from the `pip freeze` output (like pip and setuptools). :issue:`2989`. * Allow installing modules from a subdirectory of a vcs repository in non-editable mode (:issue:`3217`, :pull:`3466`). * Make pip wheel and pip download work with vcs urls with subdirectory option (:pull:`3466`). * Show classifiers in ``pip show``. * Show PEP376 Installer in ``pip show`` (:issue:`3517`). * Unhide completion command (:pull:`1810`). * Show latest version number in ``pip search`` results (:pull:`1415`). * Decode requirement files according to their BOM if present (:pull:`3485`, :issue:`2865`). * Fix and deprecate package name detection from url path (:issue:`3523` and :pull:`3495`). * Correct the behavior where interpreter specific tags (such as cp34) were being used on later versions of the same interprter instead of only for that specific interpreter (:issue:`3472`). * Fix an issue where pip would erroneously install a 64 bit wheel on a 32 bit Python running on a 64 bit OS X machine. * Do not assume that all git repositories have an origin remote. * Correctly display the line to add to a requirements.txt for an URL based dependency when ``--require-hashes`` is enabled.