title: Multiple version of dependencies in Gradle
body: <p>i'm building a java project, using gradle for version control.</p>
  
  <p>I'm migrating from an old version of the Drools rules engine 5.5.0 to 6.2.0.
  Instead of going 'big bang' and change everey class to use the new version, I would like to change one class at the time, and remove the old dependency when all the classes are migrated.</p>
  
  <p>In my gradle.build I have set:</p>
  
  <pre><code>compile 'org.drools:drools-compiler:6.2.0.Final'
  compile 'org.kie:kie-api:6.2.0.Final'  
  compile 'org.drools:drools-core:6.2.0.Final'
  
  compile 'org.drools:drools-core:5.5.0.Final'
  compile 'org.drools:drools-compiler:5.5.0.Final'
  </code></pre>
  
  <p>But it only downloads the newest version of the libraries.
  Does gradle support multiple versions of the same library?</p>