Add release support

Author: ebarped

.gitignore

@@ -0,0 +1 @@
+dist

.goreleaser.yml

@@ -0,0 +1,43 @@
+project_name: game-of-life
+before:
+  hooks:
+    - go mod tidy
+    - rm -rf dist
+    - gofumpt -l -w .
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      #- darwin
+      - linux
+      #- windows
+    goarch:
+      - amd64
+      - "386"
+      - arm
+      - arm64
+    goarm:
+      - "7"
+    ldflags:
+      - -s -w -X=github.com/ebarped/game-of-life/internal.Version={{.Version}} # go tool link flags
+    ignore:
+      - goos: windows
+        goarch: arm
+      - goos: windows
+        goarch: arm64
+      - goos: windows
+        goarch: "386"
+archives:
+  - format_overrides:
+    - goos: windows
+      format: zip
+    replacements:
+      darwin: Darwin
+      linux: Linux
+      windows: Windows
+      386: i386
+      amd64: x86_64
+release:
+snapshot:
+  name_template: "{{ .Tag }}-next"
+

Makefile

@@ -0,0 +1,32 @@
+############## TARGETS SECTION ##############
+.PHONY: all test clean
+
+build: # @HELP builds for current GOOS/GOARCH
+build:
+	@goreleaser build --snapshot --single-target --skip-validate
+
+snapshot: # @HELP generate a snapshot for all OS_ARCH combinations
+snapshot:
+	@goreleaser --snapshot --skip-publish
+
+release: # @HELP releases a new version for all OS_ARCH combinations
+release:
+	@goreleaser release
+
+dep-upgrade: # @HELP upgrades all dependencies
+dep-upgrade:
+	@go get -u ./...
+	@go mod tidy
+
+clean: # @HELP removes built binaries and temporary files
+clean:
+	@rm -rf dist
+
+help: # @HELP prints this message
+help:
+	@echo "TARGETS:"
+	@grep -E '^.*: *# *@HELP' Makefile            \
+	    | awk '                                   \
+	        BEGIN {FS = ": *# *@HELP"};           \
+	        { printf "  %-30s %s\n", $$1, $$2 };  \
+	    '

internal/version.go

@@ -0,0 +1,3 @@
+package version
+
+var Version = "version is set by build process"