* Remove all Python 2 compatibility code (228)
 * Add *python_requires* to ``setup.py`` (231)

* Support Python 3.6, 3.7, 3.8 and 3.9
 * Drop support for Python 2.4 through 2.7, and Python 3.0 through 3.5 (169)
 * Convert feedparser from a monolithic file to a package
 * ``feedparser.parse(sanitize_html=bool)`` argument replaces the ``feedparser.SANITIZE_HTML`` global
 * ``feedparser.parse(resolve_relative_uris=bool)`` replaces the ``feedparser.RESOLVE_RELATIVE_URIS`` global
 * Unify the codebase so that 2to3 conversion is no longer required
 * Remove references to iconv_codecs
 * Update the Creative Commons namespace URI's
 * Update the default User-Agent name and URL
 * Support Middle European (Summer) Time timezones (20)
 * Pass ``data`` to ``lazy_chardet_encoding()`` (50)
 * Document that datetimes are returned in UTC (51)
 * Remove cjkpython references in the documentation (57)
 * Resolve ResourceWarnings thrown during unit tests (170)
 * Fix tox build failures (213)
 * Use ``base64.decodebytes()`` directly to support Python 3.9 (201)
 * Fix Python 3.8 ``urllib.parse.splittype()`` deprecation warning (211)
 * Support parsing colons in RFC822 timezones (144)
 * Add `chardet` as an optional tox environment dependency
 * Fix the Big5 unit test that fails when chardet is installed (184)