[maven-release-plugin] prepare release github-api-1.63

The signature of the method can change for the future, but it still has
to return Label instances for older binaries

pom.xml

@@ -7,7 +7,7 @@
   </parent>
 
   <artifactId>github-api</artifactId>
-  <version>1.62</version>
+  <version>1.63</version>
   <name>GitHub API for Java</name>
   <url>http://github-api.kohsuke.org/</url>
   <description>GitHub API for Java</description>
@@ -16,7 +16,7 @@
     <connection>scm:git:git@github.com/kohsuke/${project.artifactId}.git</connection>
     <developerConnection>scm:git:ssh://git@github.com/kohsuke/${project.artifactId}.git</developerConnection>
     <url>http://${project.artifactId}.kohsuke.org/</url>
-    <tag>github-api-1.62</tag>
+    <tag>github-api-1.63</tag>
   </scm>
 
   <distributionManagement>
@@ -139,4 +139,12 @@
       <distribution>repo</distribution>
     </license>
   </licenses>
+
+  <mailingLists>
+    <mailingList>
+      <name>User List</name>
+      <post>github-api@googlegroups.com</post>
+      <archive>https://groups.google.com/forum/#!forum/github-api</archive>
+    </mailingList>
+  </mailingLists>
 </project>

src/main/java/org/kohsuke/github/GHIssue.java

@@ -52,7 +52,8 @@ public class GHIssue extends GHObject {
     protected String closed_at;
     protected int comments;
     protected String body;
-    protected List<GHLabel> labels;
+    // for backward compatibility with < 1.63, this collection needs to hold instances of Label, not GHLabel
+    protected List<Label> labels;
     protected GHUser user;
     protected String title, html_url;
     protected GHIssue.PullRequest pull_request;
@@ -126,7 +127,7 @@ public class GHIssue extends GHObject {
         if(labels == null){
             return Collections.emptyList();
         }
-        return Collections.unmodifiableList(labels);
+        return Collections.<GHLabel>unmodifiableList(labels);
     }
 
     public Date getClosedAt() {

src/site/site.xml

@@ -15,6 +15,7 @@
       <item name="Introduction"                   href="/index.html"/>
       <item name="Download"               href="http://mvnrepository.com/artifact/${project.groupId}/${project.artifactId}"/>
       <item name="Source code" href="https://github.com/kohsuke/${project.artifactId}"/>
+      <item name="Mailing List" href="https://groups.google.com/forum/#!forum/github-api"/>
     </menu>
 
     <menu name="References">