language: ruby
sudo: false
cache: bundler
rvm:
 - 2.3.1
 - 2.2.5
 - 2.1.9
addons:
  apt:
    packages:
    - libicu-dev
branches:
  only:
    - devel
    - /^v1\..*$/

language: ruby
sudo: false
cache: bundler
rvm:
  - 2.3.3
  - 2.2.6
  - 2.1.9
addons:
  apt:
    packages:
    - libicu-dev
branches:
  only:
    - devel
    - /^v1\..*$/

Test with latest Ruby version
Test with latest Ruby version
