chore: migrate to go modules

vendor/github.com/Clever/gitsem/Makefile

@@ -0,0 +1,54 @@
+SHELL := /bin/bash
+PKG = github.com/Clever/gitsem
+PKGS = $(PKG)
+VERSION := $(shell cat VERSION)
+EXECUTABLE := gitsem
+BUILDS := \
+	build/$(EXECUTABLE)-v$(VERSION)-darwin-amd64 \
+	build/$(EXECUTABLE)-v$(VERSION)-linux-amd64 \
+	build/$(EXECUTABLE)-v$(VERSION)-windows-amd64
+COMPRESSED_BUILDS := $(BUILDS:%=%.tar.gz)
+RELEASE_ARTIFACTS := $(COMPRESSED_BUILDS:build/%=release/%)
+
+.PHONY: test golint
+
+golint:
+	@go get github.com/golang/lint/golint
+
+test: $(PKGS)
+
+$(PKGS): golint
+	@go get -d -t $@
+	@gofmt -w=true $(GOPATH)/src/$@*/**.go
+ifneq ($(NOLINT),1)
+	@echo "LINTING..."
+	@PATH=$(PATH):$(GOPATH)/bin golint $(GOPATH)/src/$@*/**.go
+	@echo ""
+endif
+ifeq ($(COVERAGE),1)
+	@go test -cover -coverprofile=$(GOPATH)/src/$@/c.out $@ -test.v
+	@go tool cover -html=$(GOPATH)/src/$@/c.out
+else
+	@echo "TESTING..."
+	@go test $@ -test.v
+endif
+
+run:
+	@go run main.go
+
+build/$(EXECUTABLE)-v$(VERSION)-darwin-amd64:
+	GOARCH=amd64 GOOS=darwin go build -o "$@/$(EXECUTABLE)"
+build/$(EXECUTABLE)-v$(VERSION)-linux-amd64:
+	GOARCH=amd64 GOOS=linux go build -o "$@/$(EXECUTABLE)"
+build/$(EXECUTABLE)-v$(VERSION)-windows-amd64:
+	GOARCH=amd64 GOOS=windows go build -o "$@/$(EXECUTABLE).exe"
+build: $(BUILDS)
+%.tar.gz: %
+	tar -C `dirname $<` -zcvf "$<.tar.gz" `basename $<`
+$(RELEASE_ARTIFACTS): release/% : build/%
+	mkdir -p release
+	cp $< $@
+release: $(RELEASE_ARTIFACTS)
+
+clean:
+	rm -rf build release