v0.2.0 of chataptor_flutter

Drop-in Flutter widgets for Chataptor — real-time, auto-translated customer support chat in 100+ languages. Free forever. Built-in theming, localization, lifecycle. Changelog excerpt: ### Added - ChataptorChatScreen.showAppBar— opt-out of the screen's internal AppBarwhen embedding the chat inside a bottom sheet, dialog, or any host that provides its own chrome. The agent-presence header still renders inline at the top of the body so customers keep the "who's online" cue regardless of how the chat is mounted. - Offline UX MVP — when the backend reports OfflineMode.manualOfflinefor the active site, an inline banner is rendered above the composer and the composer itself i[...]