language: ruby
rvm:
  - 2.2.2
  - 2.3.1
sudo: false

language: ruby
rvm:
  - 2.2.2
  - 2.3.1
  - 2.5.3
  - 2.6.3
sudo: false

Add ruby versions 2.5.3 and 2.6.3 to Travis CI.
Add ruby versions 2.5.3 and 2.6.3 to Travis CI.