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0.8

• According to the new version of the spec, the URL of the Hub changed moved from /hub to /.well-known/mercure
• HISTORY_CLEANUP_FREQUENCY, HISTORY_SIZE and DB_PATH environment variables have been replaced by the new TRANSPORT_URL environment variable
• Lists in ACME_HOSTS, CORS_ALLOWED_ORIGINS, PUBLISH_ALLOWED_ORIGINS must now be space separated
• The public API of the Go library has been totally revamped