update travis

.travis.yml

@@ -6,6 +6,8 @@ os:
 julia:
   - 1.0
   - 1.1
+  - 1.2
+  - 1.3
   - nightly
 notifications:
   email: true
@@ -19,7 +21,3 @@ matrix:
   # - julia -e 'Pkg.clone(pwd()); Pkg.build("Groups"); Pkg.test("Groups"; coverage=true)'
 
 codecov: true
-
-# after_success:
-  # push coverage results to Coveralls
-   #- julia -e 'using Pkg; Pkg.build(); Pkg.test(coverage=true);'