language: ruby
rvm:
  - 2.0.0
  - 2.1.5
  - 2.2.0
  - 2.5.0
  - 2.7.0

language: ruby
rvm:
  - 1.9.3
  - 2.3
  - 2.5
  - 2.6
  - 2.7

Tweak build matrix to be more flexible on newer versions; add back 1.9.3
Tweak build matrix to be more flexible on newer versions; add back 1.9.3
