* Update Travis CI to use latest Go releases
* Fix go vet issues for Go 1.10
Starting in Go 1.10, the `go test` command now automatically runs `go
vet`. This commit fixes two issues flagged by vet that cause `go test`
to fail.
* Fix gofmt issue for Go 1.10
Go 1.10 introduced a small formatting change with comments in empty
multiline slice definitions. This commit attempts to move the offending
comment in such a way that all version of gofmt will agree on its
location.
* Remove go-vet from test.sh
Starting in Go 1.10, the `go test` command automatically runs `go vet`,
so we don't need to run `go vet` explicitly from within test.sh.
Fixes#222
Thomas Pelletier