Merge pull request #21 from HaraldNordgren/go_versions

Bump Go versions and use '.x' to always get latest patch versions

.travis.yml

@@ -3,7 +3,10 @@ services:
   - mysql
   - postgres
 go:
-    - 1.8
+    - 1.8.x
+    - 1.9.x
+    - 1.10.x
+    - 1.11.x
     - tip
 env:
   global:
@@ -23,4 +26,4 @@ before_script:
   - psql -c 'create database sqlhooks;' -U postgres
 script:
     - go test -v -covermode=count -coverprofile=coverage.out
-    - $HOME/gopath/bin/goveralls -service=travis-ci -coverprofile=coverage.out
+    - $HOME/gopath/bin/goveralls -service=travis-ci -coverprofile=coverage.out