CHANGELOG.md in aerospike-2.19.0 vs CHANGELOG.md in aerospike-2.20.0

- old
+ new
@@ -1,8 +1,19 @@
 # Changelog
 
 All notable changes to this project will be documented in this file.
 
+## [2.20.0] - 2020-11-08
+
+Notice: This version of the client only supports Aerospike Server v4.9 and later. Some features will work for the older server versions, but they are not tested, nor officially supported.
+
+* **New Features**
+  * [CLIENT-1467] Support native Boolean type for server v5.6+.
+
+* **Improvements**
+  * Add basic support for server v4.9+ scan/queries.
+  * Don't check for key equality in Batch command results.
+
 ## [2.19.0] - 2020-02-09
 
 * **Improvements**
   * Remove Timeout in `wait_till_stabilized` in favor of `thread.join(timeout)` . Thanks to [Marcelo](https://github.com/MarcPer) [[#104](https://github.com/aerospike/aerospike-client-ruby/pull/104)]
   * Adds `ResultCode::LOST_CONFLICT`