Post #76

We've just released v12.2.0 Thanks for anyone who've contributed to this release. As usual upgrade using pip install -U python-telegram-bot New features: - Nested ConversationHandlers (#1512). Minor changes, CI improvments or bug fixes: - Fix CI failures due to non-backward compat attrs depndency (#1540). - travis.yaml: TEST_OFFICIAL removed from allowed_failures. - Fix typos in examples (#1537). - Fix Bot.to_dict to use proper first_name (#1525). - Refactor test_commandhandler.py (#1408). - Add Python 3.8 (RC version) to Travis testing matrix (#1543). - test_bot.py: Add to_dict test (#1544). - Flake config moved into setup.cfg (#1546).