Changelog for Demo Generator 0.8.0

Changes

• Add top menu to the UI (PR, #6141)
• Limit ulimits in the example in README. This should solve high memory usage. (PR)
• Turn off IPv6 (PR, #6088)
• Add new universal event generator (PR, #6160)
• Make event type configurable in universal event generator (PR, #6160)
• Add incidents to universal event generator (PR)
• Preview rendered event text when generating universal events (PR, #6292)
• Universal event: Ability to choose actors when generating an event (PR, #6293)