use recent ruby 2.3 and 2.4 on travis
@@ -18,15 +18,15 @@ matrix:
- os: osx
rvm: 2.2.5
- os: linux
- rvm: 2.3.1
+ rvm: 2.3.5
- os: osx
- rvm: 2.3.1
+ rvm: 2.3.5
- os: linux
- rvm: 2.4.0
+ rvm: 2.4.2
env:
- RUBYOPT="--enable-frozen-string-literal --debug=frozen-string-literal"
- os: osx
- rvm: 2.4.0
+ rvm: 2.4.2
env:
- RUBYOPT="--enable-frozen-string-literal --debug=frozen-string-literal"
- os: linux
