# Changelog

## [0.50.0] - 2026-03-11

### Added
- **`StreamCipher`** — XOR encryption with rotating key
- **`ChannelMux`/`ChannelDemux`** — multi-channel mux/demux
- **`FramePacer`** — interval-based frame pacing
- **`CongestionWindow`** — AIMD congestion control
- **`FlowController`** — token-bucket flow control
- **`ProtocolNegotiator`** — capability exchange
- **`ReplayRecorder`** — frame recording for replay
- **`BandwidthShaper`** — enforce max bytes/sec
- 9 new tests (201 total)

## [0.40.0] — QualityAdapter, SourceMixer, FrameDeduplicator, BackpressureController, HeartbeatMonitor, CompressionTracker, FecEncoder, StreamSnapshot, AdaptivePriorityQueue
## [0.30.0] — FrameRingBuffer, PacketLossDetector, ConnectionQuality