FeedGenerator 2.1.0

• Modernize and improve tests (#32 & #34 — thanks to @venthur)
• Drop support for Python 3.6 and test on 3.10 & 3.11 (#35 — thanks to @hugovk)
• Exclude tests_feedgenerator/__pycache__ from distribution (#33 — thanks to @BenSturmfels)

FeedGenerator 2.0.0

• Add preliminary support for adding images to feeds
• Update code for Python 3.6+
• Drop support for Python 2.7
• Fix double subtitles if both description & subtitle are provided

FeedGenerator 1.9.2

• Use description field as subtitle for Atom feeds, if provided (#23)
• Update list of explicitly-supported Python versions to 3.6 – 3.9

FeedGenerator 1.9.1

• Remove unnecessary files from source distribution
• Update PyPI classifiers