Travis Updates (#21)

- Set up goreleaser in the deploy block to fix the releases
- Better matrix on golang, with allowed failures on tip
- Added gofmt requirements to the test.

.travis.yml

@@ -1,27 +1,51 @@
+# References:
+# - https://blog.questionable.services/article/build-go-binaries-travis-ci-github/
+# - https://goreleaser.com/ci/
+
 language: go
 sudo: false
 
-go:
- - "1.7"
- - "1.8 " 
- - "1.9"
- - "1.10"
- - "1.11"
- - "tip"
+matrix:
+ include:
+ # "1.x" always refers to the latest Go version, inc. the patch release.
+ # e.g. "1.x" is 1.11 until 1.11.1 is available.
+ - go: 1.x
+ env: LATEST=true
+ - go: 1.7.x
+ - go: 1.8.x
+ - go: 1.9.x
+ - go: 1.10.x
+ - go: 1.11.x
+ - go: tip
+ allow_failures:
+ - go: tip
 
+# https://docs.travis-ci.com/user/reference/overview/#virtualisation-environment-vs-operating-system
 os:
  - linux
  - osx
 
 install:
- - go get -t ./...
+ - go get -t -v ./...
+
+# Only clone the most recent commit.
+git:
+ depth: 1
+
 
-script: 
+script:
+ - diff -u <(echo -n) <(gofmt -d .)
+ - go vet $(go list ./... | grep -v /vendor/)
  - go test -short -v ./...
  - go build -v ./...
  - ./e2e.sh
 
-after_success: |
- test "$TRAVIS_OS_NAME" = "linux" -a -n "$TRAVIS_TAG" \
- && go get github.com/goreleaser/goreleaser \
- && goreleaser
+# calls goreleaser
+# https://docs.travis-ci.com/user/deployment
+deploy:
+- provider: script
+ skip_cleanup: true
+ script: curl -sL https://git.io/goreleaser | bash
+ on:
+ tags: true
+ condition: $TRAVIS_OS_NAME = linux && $LATEST = true