Updated github workflows

.travis.yml

@@ -1,20 +0,0 @@
-language: go
-
-go:
-  - "1.14.x"
-  - "1.15.x"
-  - tip
-
-matrix:
-  allow_failures:
-    - go: tip
-  fast_finish: true
-
-before_script:
-  - GO_FILES=$(find . -iname '*.go' | grep -v /vendor/)
-  - PKGS=$(go list ./... | grep -v /vendor/)
-
-script:
-  - test -z $(gofmt -s -l $GO_FILES)
-  - go test -v -race $PKGS
-  - go vet $PKGS