prepare for v0.8.0 release

Author: jiankai

CHANGES.md

@@ -3,7 +3,7 @@ Changelog
 
 All notable changes to this project will be documented in this file.
 
- [v0.8.0]  - unreleased
+ [v0.8.0]  - 2022-05-03
 ---------------------------------
 
 * refactor for backend room management

README.md

@@ -19,7 +19,7 @@ Second, Janus processes the WebRTC signalling, as well as the media data. But in
 - Scalable, Janus media servers can be added/removed to/from the cluster dynamically
 - Support Janus media service self-register, service monitor, circuit breaker
 - Pluggable, support the new features through developing the new plugin
-- Consistent API with the Janus server (until v0.10.7), which is compatible with the original client of the Janus server
+- Consistent API with the Janus server (until v0.12.0), which is compatible with the original client of the Janus server
 
 
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