prepare release 4.1.5

Author: Mark

Diff for: ChangeLog

@@ -1,5 +1,6 @@
-v4.1.5 (2017-01-xx)
+v4.1.5 (2017-01-12)
 ---------------------------
+* fixed VPack String serialization (UTF-8 encoding)
 * fixed VPack parsing of fields of type Object
 * fixed VPack serializing of array with null values (issue #88)
 * added configuration for custom annotations within VPack de-/serialization

Diff for: pom.xml

@@ -4,7 +4,7 @@
 
 	<groupId>com.arangodb</groupId>
 	<artifactId>arangodb-java-driver</artifactId>
-	<version>4.1.5-SNAPSHOT</version>
+	<version>4.1.5</version>
 	<inceptionYear>2016</inceptionYear>
 	<packaging>jar</packaging>