Reverted build version to 1.6

pom.xml

@@ -108,12 +108,12 @@
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-api</artifactId>
-            <version>1.7.4</version>
+            <version>1.7.5</version>
         </dependency>
         <dependency>
             <groupId>org.slf4j</groupId>
             <artifactId>slf4j-jdk14</artifactId>
-            <version>1.7.4</version>
+            <version>1.7.5</version>
             <scope>test</scope>
         </dependency>
     </dependencies>
@@ -146,8 +146,8 @@
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.0</version>
                 <configuration>
-                    <source>1.7</source>
-                    <target>1.7</target>
+                    <source>1.6</source>
+                    <target>1.6</target>
                     <failOnError>true</failOnError>
                     <verbose>true</verbose>
                     <!-- excludes><exclude>**/*</exclude></excludes -->