Release 9.2: Sphinx extension metadata

Add humanfriendly.compat.on_macos()

Release 9.0: Assorted bug fixes & enhancements

See the changelog update for details.
This fixes xolox#30, xolox#40 and xolox#43.

Release 8.2: Simple case insensitive dictionaries

Release 8.1: Improved output capturing

Release 8.0: Make spinners more flexible, adopt deprecated imports

The work on spinners was prompted by the following:
xolox/python-executor#2

Everything else was me going mad on a refactoring spree 😇

Release 7.3: Support for deprecating positional arguments

Release 7.2: Support for deprecated imports

Release 7.1.1: Restore Debian/Ubuntu Python 3 compatibility (distutil…

…s.spawn)

Release 7.1: Enable Windows native ANSI support