Merge pull request #242 from jon-signal/jdk_base64

Replace `Base64.java` with the JDK-provided `Base64` decoder

Author: denizkilic

api/pom.xml

@@ -4,10 +4,7 @@
 
     <groupId>com.messagebird</groupId>
     <artifactId>messagebird-api</artifactId>
-    <version>6.1.0</version> <!--
-        are you going to bump a major number?
-        then you are pleased to replace com.messagebird.Base64 with some library, for example net.iharder.base64
-    -->
+    <version>6.1.0</version>
     <packaging>jar</packaging>
 
     <name>${project.groupId}:${project.artifactId}</name>