Release version 2.5.0 Major features: * Administration API: New endpoints have been added which are accessible by users defined by `security.admin-accounts`. * Evaluation of free text answers * Proxy support for WebSocket connections: It is now possible to use the same port for standard HTTP requests and WebSocket connections. Additionally, it is no longer necessary to setup a Java key store for TLS if a proxy is used. * Auto-deletion of inactive (not activated) users and guest sessions Minor features and changes: * Caching improvements * New use case including only comments * Export of questions to arsnova.click format * Export/import of flashcards to/from arsnova.cards format * Flashcards are now handled separately from questions Configuration changes: * `socketio.ip` has been replaced by `socketio.bind-address` * `security.ssl` has been removed. `security.keystore` and `security.storepass` have been replaced by `socketio.ssl.jks-file` and `socketio.ssl.jks-password`. * New setting: `socketio.proxy-path` * The default port for WebSocket connections has been changed to `8090` With this release we have completely overhauled our [documentation](README.md). Additionally, we now provide [Docker images](https://github.com/thm-projects/arsnova-docker/).