cr-xmpp XMPP/Jabber library for Crystal A pure-Crystal, event-driven toolkit for building XMPP clients, bots, automation services, connected devices, gateways, and XEP-0114 external components. It manages the wire protocol and connection lifecycle while exposing XMPP through typed, extensible Crystal APIs. Crystal Unix complete partial MUC presence and history payloads; no room administration or configuration. complete complete complete complete complete complete complete partial Presence capability payload parsing and serialization; no verification cache. complete complete complete complete complete complete complete partial Control set, fields, getForm, and setResponse data models. complete complete partial Component-side advertisements, delegated IQ unwrapping, and response wrapping. partial Component-side permissions, roster helpers, and outgoing privileged messages. complete Encryption marker and encryption-namespace identifiers; no encryption engine. complete complete complete complete complete complete complete