Update .travis.yml

Author: ericphanson

.travis.yml

@@ -4,15 +4,15 @@ os:
   - osx
 julia:
   - 1.0
-  - 1.3
+  - 1.4
 notifications:
   email: false
 after_success:
   - julia -e 'using Pkg; Pkg.add("Coverage"); using Coverage; Coveralls.submit(process_folder())'
 jobs:
   include:
     - name: "Benchmark"
-      julia: 1.3
+      julia: 1.4
       os: linux
       before_script:
         - git fetch origin '+refs/heads/master:refs/remotes/origin/master'