Er mah gerd. More Maven jockeying.

Apparently the "check for updated versions of plugins" plugin missed a few
spots. Also I may or may not have to specify 2.8 for maven-dependency-plugin to
avoid a bullshit CNFE during the actual release process (which conveniently
comes after Maven has committed and pushed all of its release bullshit to Git,
meaning I can't fix the release after the fact and have to make a new release).

Oh computers...

pom.xml

@@ -165,7 +165,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>2.8.1</version>
+        <version>2.9.1</version>
         <configuration>
           <quiet>true</quiet>
           <show>public</show>
@@ -179,13 +179,13 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-jar-plugin</artifactId>
-        <version>2.3.1</version>
+        <version>2.5</version>
       </plugin>
 
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-install-plugin</artifactId>
-        <version>2.3.1</version>
+        <version>2.5.1</version>
       </plugin>
 
       <plugin>
@@ -194,10 +194,16 @@
         <version>2.7</version>
       </plugin>
 
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-dependency-plugin</artifactId>
+        <version>2.8</version>
+      </plugin>
+
       <plugin>
         <groupId>org.sonatype.plugins</groupId>
         <artifactId>nexus-staging-maven-plugin</artifactId>
-        <version>1.4.4</version>
+        <version>1.6.2</version>
         <extensions>true</extensions>
         <configuration>
           <nexusUrl>https://oss.sonatype.org/</nexusUrl>
@@ -249,7 +255,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-gpg-plugin</artifactId>
-            <version>1.1</version>
+            <version>1.5</version>
             <executions>
               <execution>
                 <id>sign-artifacts</id>