# Changelog

This is the part where we admit that protocols evolve.

RRC uses a protocol version field, but that does not mean every change deserves
(or gets) a version bump. Most changes are additive and forward-compatible.
Implementations that obey the compatibility rules will survive.

## 0.1.1 (2025-12-31)

- HELLO body no longer defines a nickname field; nickname is carried in the
    envelope.
- HELLO body key assignments now start at 0.
- WELCOME body replaces Greeting with Hub Version.
- Clarified that HELLO/WELCOME bodies may carry session-specific negotiation
    data (versions/capabilities) and that human-facing metadata is outside the
    scope of this spec.

## 0.1 (2025-12-30)

- Added Envelope Field 7: Nickname (optional, advisory).
- Added message type 13: PARTED (hub confirms room departure).
- Reserved envelope field keys 0..39 for core use; extensions may use 40..63.

## Unreleased

- Nothing yet. Enjoy this brief moment of calm.