tang0 0.10.0

Cross-tab sync & dedup primitives for Flutter web — presence, true leader election, CRDT conflict resolution, and state catch-up over BroadcastChannel & Web Locks.

0.10.0

• Breaking: Ground-up rebuild into layered cross-tab primitives — Tang0Channel, T0SyncVar (old), SyncEnum, and the templates are removed
• Added T0Platform — injectable browser surface (clock, storage, channel, Web Locks) so the protocol is testable without a browser
• Added T0Presence — live tab awareness with per-tab metadata, heartbeat, and stale pruning
• Added T0Leader — true single-leader election over Web Locks; fails loud when unavailable instead of degrading
• Added T0SoftLock — explicitly advisory localStorage lease for best-effort coordination (never a true leader)
• Added T0Rpc — request/response over a bus for cross-tab queries
• Added T0Hydrator — new-tab state catch-up from a peer snapshot or persisted storage
• Added T0LwwRegister — last-write-wins conflict resolution (version, timestamp, origin tiebreak)
• Rebuilt T0SyncVar<T> on LWW with persistence and new-tab catch-up
• Rebuilt T0TabDeduper on presence; added T0SharedDraft for shared editing sessions
• Kept T0Bus, T0Store, T0DispatchPool, and the T0Codec registry as the core layer
• Fixed Zone-capture handling in channel listeners; bundled the example with web scaffolding
• Tests run under flutter test --platform chrome against an in-memory multi-tab fake

0.9.0

• Breaking: Complete API redesign — crypto/SyncedWidget replaced with lightweight cross-tab sync toolkit
• Added Tang0Channel — BroadcastChannel wrapper with multi-listener support, payload hooks, JSON mutators
• Added T0SyncVar<T> — ValueNotifier-based state sync with codec registry and SyncEnum modes
• Added T0ReactiveStream<T> — ChangeNotifier + broadcast stream for cross-tab events
• Added T0DispatchPool — global rate limiter/queue with optional coalescing
• Added SyncVarCodecs — built-in codecs for primitives, DateTime, Uri, JSON maps/lists
• Added example app with timer and tab-dedup demos

0.1.0 (legacy)

• Supporting async message handlers with error strategies

0.0.3 (legacy)

• Minor wording update

0.0.2 (legacy)

• Users can now set optionalSecurityEncrypt and optionalSecurityDecrypt for enhanced data security
• One-way messaging with OneWaySender and OneWayReceiver
• Flutter Secure Storage integration with automatic fallback
• Updated documentation with custom encryption examples

0.0.1 (legacy)

• Initial release of Tang0 — Flutter web cross-tab communication package
• BroadcastChannel-based messaging with HMAC-SHA256 security
• Synced widgets with SyncedWidget and SyncedVar<T> for automatic state synchronization
• Helper methods and UI components for easy widget creation
• Examples for both one-way communication and synced widgets