v0.2.0

What's New

• feat: add Env.Get(key) function
• refactor: prefix error message with 'dotenv:'
• test: check DefaultEnvSetter implements EnvSetter
• test: fix errcheck nits
• build: update Makefile
• build: Go 1.18
• build: use $(RM) instead of 'rm -f'
• ci: update kare/github/.github/workflows/go-pkg-ci.yaml@v0.2.0
• ci: update kare/github/.github/workflows/go-pkg-ci.yaml@v0.2.1
• ci: use main branch of Go pkg workflow

Full Changelog: v0.1.1...v0.2.0