Prepare versions and change log for release 0.3.1.

Author: jradcliff

CHANGELOG.md

@@ -1,3 +1,8 @@
+0.3.1 - 2018-08-08
+------------------
+
+- Updated FieldMasks utility to properly handle wrapper types.
+
 0.3.0 - 2018-06-18
 ------------------
 

google-ads-examples/pom.xml

@@ -22,15 +22,15 @@
   <parent>
     <groupId>com.google.api-ads</groupId>
     <artifactId>google-ads-parent</artifactId>
-    <version>0.3.0</version>
+    <version>0.3.1-SNAPSHOT</version>
     <relativePath>../pom.xml</relativePath>
   </parent>
 
   <modelVersion>4.0.0</modelVersion>
   <groupId>com.google.api-ads</groupId>
   <artifactId>google-ads-examples</artifactId>
   <packaging>jar</packaging>
-  <version>0.3.0</version>
+  <version>0.3.1-SNAPSHOT</version>
   <name>Google Ads API client library for Java examples</name>
   <description>
     Examples demonstrating the Google Ads API client library for Java.
@@ -55,7 +55,7 @@
     <dependency>
       <groupId>com.google.api-ads</groupId>
       <artifactId>google-ads</artifactId>
-      <version>0.3.0</version>
+      <version>0.3.1-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>com.beust</groupId>