added bytecode version check

Author: raydac

pom.xml

@@ -145,7 +145,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-enforcer-plugin</artifactId>
-                    <version>3.0.0-M2</version>
+                    <version>3.0.0</version>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
@@ -163,7 +163,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-enforcer-plugin</artifactId>
-                <version>3.0.0</version>
+                <version>3.1.0</version>
                 <executions>
                     <execution>
                         <id>no-duplicate-declared-dependencies</id>
@@ -173,11 +173,26 @@
                         <configuration>
                             <rules>
                                 <banDuplicatePomDependencyVersions/>
-<!--                                <dependencyConvergence/>-->
+                                <enforceBytecodeVersion>
+                                    <maxJdkVersion>1.8</maxJdkVersion>
+                                </enforceBytecodeVersion>
+                                <!--                                <dependencyConvergence/>-->
                             </rules>
                         </configuration>
                     </execution>
                 </executions>
+                <dependencies>
+                    <dependency>
+                        <groupId>org.codehaus.mojo</groupId>
+                        <artifactId>extra-enforcer-rules</artifactId>
+                        <version>1.3</version>
+                    </dependency>
+                    <dependency>
+                        <groupId>org.apache.maven.shared</groupId>
+                        <artifactId>maven-dependency-tree</artifactId>
+                        <version>2.2</version>
+                    </dependency>
+                </dependencies>
             </plugin>
         </plugins>
     </build>