.travis.yml in alba-0.11.0 vs .travis.yml in alba-0.11.1

@@ -3,7 +3,8 @@
 cache: bundler
 rvm:
   - 2.5.8
   - 2.6.6
   - 2.7.1
+  # - ruby-head # oj doesn't work with Ruby 2.8.0
   - truffleruby
 before_install: gem install bundler -v 2.1.4