update changelog for v2.14.0

Author: alicebob

CHANGELOG.md

@@ -1,5 +1,10 @@
 ## Changelog
 
+### v2.14.0
+
+- support for HELLO and the RESP3 protocol
+- KEEPTTL in SET (thanks @johnpena)
+
 ### v2.13.3
 
 - support Go 1.14 and 1.15

README.md

@@ -28,6 +28,7 @@ Implemented commands:
  - Connection (complete)
    - AUTH -- see RequireAuth()
    - ECHO
+   - HELLO -- see RequireUserAuth()
    - PING
    - SELECT
    - SWAPDB
@@ -312,6 +313,9 @@ Commands which will probably not be implemented:
 Tests are run against Redis 6.0.5. The [./integration](./integration/) subdir
 compares miniredis against a real redis instance.
 
+The Redis 6 RESP3 protocol is supported. If there are problems, please open
+an issue.
+
 If you want to test Redis Sentinel have a look at [minisentinel](https://github.com/Bose/minisentinel).
 
 A changelog is kept at [CHANGELOG.md](https://github.com/alicebob/miniredis/blob/master/CHANGELOG.md).