Added SonarCloud

.gitignore

@@ -84,3 +84,4 @@ nbdist/
 nbactions.xml
 nb-configuration.xml
 .nb-gradle/
+/.idea/

.travis.yml

@@ -0,0 +1,24 @@
+language: java
+sudo: false
+addons:
+    sonarcloud:
+        organization: "bentobox-world"
+        token:
+            secure: $SONAR_TOKEN
+
+jdk:
+    - openjdk8
+    - openjdk11
+    
+matrix:
+  allow_failures:
+    - jdk: openjdk11
+    
+script:
+  # the following command line builds the project, runs the tests with coverage and then execute the SonarCloud analysis
+  - mvn clean org.jacoco:jacoco-maven-plugin:prepare-agent install sonar:sonar -Dsonar.projectKey=BentoBoxWorld_Limits
+  
+cache:
+    directories:
+        - '$HOME/.m2/repository'
+        - '$HOME/.sonar/cache'

pom.xml

@@ -95,6 +95,30 @@
                 <build.number></build.number>
             </properties>
         </profile>
+        <profile>
+            <id>sonar</id>
+            <properties>
+                <sonar.host.url>https://sonarcloud.io</sonar.host.url>
+                <sonar.organization>bentobox-world</sonar.organization>
+            </properties>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.sonarsource.scanner.maven</groupId>
+                        <artifactId>sonar-maven-plugin</artifactId>
+                        <version>3.6.0.1398</version>
+                        <executions>
+                            <execution>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sonar</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
     </profiles>
 
     <repositories>
@@ -213,9 +237,14 @@
             <plugin>
                 <groupId>org.jacoco</groupId>
                 <artifactId>jacoco-maven-plugin</artifactId>
-                <version>0.8.1</version>
+                <version>0.8.3</version>
                 <configuration>
                     <append>true</append>
+                    <excludes>
+                        <!-- This is required to prevent Jacoco from adding 
+                            synthetic fields to a JavaBean class (causes errors in testing) -->
+                        <exclude>**/*Names*</exclude>
+                    </excludes>
                 </configuration>
                 <executions>
                     <execution>