Prepare release 2.1.0

Author: bbottema

Diff for: README.MD

@@ -13,12 +13,17 @@ Note: This is a revival / continuation of the archived project markenwerk/java-u
 <dependency>
 	<groupId>org.simplejavamail</groupId>
 	<artifactId>utils-mail-smime</artifactId>
-	<version>2.0.0</version>
+	<version>2.1.0</version>
 </dependency>
 ```
 
 ## Change history
 
+v2.1.0 (05-04-2023)
+
+- [#3](https://github.com/simple-java-mail/java-utils-mail-smime/issues/3) Feature: Make cryptographic algorithms configurable
+
+
 v2.0.1 (31-01-2022)
 
 - [#1](https://github.com/simple-java-mail/java-utils-mail-smime/issues/1) Bug: determining mime state causes NPE when the "protocol" part is missing from the ContentType header