Release 2.1.1.

Author: bgrainger

docs/content/overview/version-history.md

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-lastmod: 2021-11-27
+lastmod: 2021-12-21
 date: 2017-03-27
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 # Version History
 
+### 2.1.1
+
+* Fix `InvalidOperationException` when `OpenAsync` is called again after being canceled: [#1097](https://github.com/mysql-net/MySqlConnector/issues/1097).
+* Allow `OpenAsync` to be canceled earlier.
+
 ### 2.1.0
 
 * Opening a connection from the pool is now twice as fast: [#1089](https://github.com/mysql-net/MySqlConnector/issues/1089).