Changelog:
==========
NEW: Update to support changes related to :lang() in the official CSS spec. :lang("") should match unspecified
languages, e.g. lang="", but not lang=und.
NEW: Only :is() and :where() should allow forgiving selector lists according to latest CSS (as far as Soup
Sieve supports "forgiving" which is limited to empty selectors).
NEW: Formally drop Python 3.6.
NEW: Formally declare support for Python 3.11.
Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
