Merge pull request #663 from auhlig/v3_collaboration

upgrade to java 1.8

Author: gondor

.travis.yml

@@ -1,8 +1,7 @@
 language: java
 
 jdk:
-  - oraclejdk7
-  - openjdk7
+  - oraclejdk8
 
 notifications:
   email: false

pom.xml

@@ -90,8 +90,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.0</version>
                 <configuration>
-                    <source>1.6</source>
-                    <target>1.6</target>
+                    <source>1.8</source>
+                    <target>1.8</target>
                     <encoding>UTF-8</encoding>
                 </configuration>
             </plugin>
@@ -311,4 +311,4 @@
         </profile>
     </profiles>
 
-</project>
+</project>