.travis.yml in clowne-1.2.0 vs .travis.yml in clowne-1.3.0

@@ -22,9 +22,11 @@
   include:
     - rvm: ruby-head
       gemfile: gemfiles/railsmaster.gemfile
     - rvm: jruby-9.2.8.0
       gemfile: gemfiles/jruby.gemfile
+    - rvm: 3.0
+      gemfile: Gemfile
     - rvm: 2.7
       gemfile: Gemfile
     - rvm: 2.6.5
       gemfile: Gemfile
     - rvm: 2.5.7