before_install:
  - sudo apt-get install -y idn
language: ruby
rvm:
  - 2.6
  - 2.5
  - 2.4
  - 2.3
  - 2.2
  - 2.1
  - 2.0

before_install:
  - sudo apt-get install -y libidn11 libidn11-dev
language: ruby
rvm:
  - 2.6
  - 2.5
  - 2.4
  - 2.3
  - 2.2
  - 2.1
  - 2.0

Fix Travis CI configuration for Ubuntu Xenial
Fix Travis CI configuration for Ubuntu Xenial
