- set `ALLOW_PLANTUML_INCLUDE` only once and decentralized inside the `DiagramResponse` class and call this init method after initializing the server - set `PLANTUML_SECURITY_PROFILE` to `INTERNET` by default (BREAKING CHANGES) - add possibility to set PlantUML system properties over a file with `PLANTUML_PROPERTY_FILE` - adjust documentation - add "Breaking changes" hint to README