stop testing Julia v1.2, start testing on windows (#77)

Author: dkarrasch

.travis.yml

@@ -1,20 +1,22 @@
 # Documentation: http://docs.travis-ci.com/user/languages/julia/
 language: julia
+
 os:
   - linux
   - osx
+  - windows
+
 julia:
   - 1.0
-  - 1.2
   - 1.3
   - nightly
 
 matrix:
   allow_failures:
     - julia: nightly
+
 notifications:
     email: false
 
-
 after_success:
   - julia -e 'using Pkg; Pkg.add("Coverage"); using Coverage; Codecov.submit(Codecov.process_folder()); Coveralls.submit(Coveralls.process_folder())'