Update go versions to something more modern

cwood · cwood · commit 697205e50e90 · 2020-01-14T17:36:34.000Z
diff --git a/.travis.yml b/.travis.yml
@@ -1,9 +1,9 @@
 language: go
 
 go:
-  - "1.9"
   - "1.10"
   - "1.11"
+  - "1.13"
   - tip
 
 env:

-Original file line number
+Diff line change
@@ @@ -1,9 +1,9 @@ @@
 language: go
 go:
 -  - "1.9"
   - "1.10"
   - "1.11"
 +  - "1.13"
   - tip
 env: