Update version in Maven coordinates.

Author: garydgregory

README.md

@@ -68,7 +68,7 @@ Alternatively you can pull it from the central Maven repositories:
 <dependency>
   <groupId>org.apache.commons</groupId>
   <artifactId>commons-csv</artifactId>
-  <version>1.3</version>
+  <version>1.4</version>
 </dependency>
 ```