Fix the ChatUnavailableError in case the bot misses the chat unavailable update from telegram and fix a bug in botogram 0.3.4 that doesn't process the migration from a normal group to a super group event despite it being mentioned in the documentation
Fix the ChatUnavailableError in case the bot misses the chat unavailable update from telegram and fix a bug in botogram 0.3.4 that doesn't process the migration from a normal group to a super group event despite it being mentioned in the documentation

paolobarbolini/TelegramSchoolBot