prepare version 2.2.1

Author: overheadhunter

pom.xml

@@ -2,7 +2,7 @@
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>org.cryptomator</groupId>
 	<artifactId>cryptolib</artifactId>
-	<version>2.3.0-SNAPSHOT</version>
+	<version>2.2.1</version>
 	<name>Cryptomator Crypto Library</name>
 	<description>This library contains all cryptographic functions that are used by Cryptomator.</description>
 	<url>https://github.com/cryptomator/cryptolib</url>