docs: prepare changelog

CHANGELOG.md

@@ -8,19 +8,30 @@ with the `YY.0M.MICRO` scheme.
 
 <img src="https://img.shields.io/badge/calver-YY.0M.MICRO-22bfda.svg">
 
-## HEAD
+## [22.11.0] - 2022-11-22
 
 ### Features
 
-- Add Expel Node feature
+- Brand new algorithm of cluster management based on _"governor"_
+  concept — a centralized actor that operates topology and performs
+  instances configuration.
 
-### Fixes
+- Instances state is denoted by the word _"grade"_ (current and target).
+  The current grade of an instance is not what it tells about itself,
+  but how other instances are configured with respect to the current
+  one.
 
-- Fix bug when the leader changes during a new instance joins
+- Automatically configure _sharding_ (based on `vshard`) and perform
+  rebalancing when replication factor is satisfied.
 
-### Chore
+- Apply schema and data _migrations_ clusterwide.
 
-- No longer generated logs higher than the PICODATA_LOG_LEVEL set (led to an overall performance improvement)
+- Shrink cluster by _expelling_ instances.
+
+### Compatibility
+
+- Current version is NOT compatible with `22.07.0`. It cannot be started
+  with the old snapshots.
 
 ## [22.07.0] - 2022-07-08