travis: update the Go versions

carlosmn · carlosmn · commit bcf8c1bf404b · 2017-07-04T13:02:12.000+02:00
We need to use `runtime.KeepAlive()` which only exists past Go 1.7. Furthermore,
Go 1.7 is the latest supported by the language team.
diff --git a/.travis.yml b/.travis.yml
@@ -1,9 +1,8 @@
 language: go
 
 go:
-  - 1.5
-  - 1.6
   - 1.7
+  - 1.8
   - tip
 
 script: make test-static

-Original file line number
+Diff line change
@@ @@ -1,9 +1,8 @@ @@
 language: go
 go:
 -  - 1.5
 -  - 1.6
   - 1.7
 +  - 1.8
   - tip
 script: make test-static