Merge pull request #31 from sullis/mockito-3.0.0

Upgrade to Mockito 3.0.0

Author: adam-sandor

pom.xml

@@ -71,7 +71,7 @@
             <dependency>
                 <groupId>org.mockito</groupId>
                 <artifactId>mockito-core</artifactId>
-                <version>2.28.2</version>
+                <version>3.0.0</version>
                 <scope>test</scope>
             </dependency>
         </dependencies>