Upgrade dependencies

This fixes #60

Author: michael-o

pom.xml

@@ -51,7 +51,7 @@
     <dependency>
       <groupId>org.codehaus.plexus</groupId>
       <artifactId>plexus-container-default</artifactId>
-      <version>1.0-alpha-9-stable-1</version>
+      <version>1.0-alpha-30</version>
       <scope>provided</scope>
     </dependency>
     <dependency>
@@ -67,7 +67,7 @@
     <dependency>
       <groupId>org.apache.commons</groupId>
       <artifactId>commons-compress</artifactId>
-      <version>1.11</version>
+      <version>1.14</version>
     </dependency>
     <dependency>
       <groupId>org.iq80.snappy</groupId>
@@ -83,13 +83,13 @@
     <dependency>
       <groupId>com.google.code.findbugs</groupId>
       <artifactId>jsr305</artifactId>
-      <version>3.0.0</version>
+      <version>3.0.2</version>
       <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>org.tukaani</groupId>
       <artifactId>xz</artifactId>
-      <version>1.5</version>
+      <version>1.6</version>
       <scope>runtime</scope>
     </dependency>
   </dependencies>