v1.0.3

What's Changed

• Bump kkohtaka/gh-actions-pr-size from 1.0.1 to 1.0.2 by @dependabot in #20
• CI: Set up Codecov with GitHub actions by @kkohtaka in #21
• CI: Set up golangci-lint with reviewdog by @kkohtaka in #22
• refactor: Add unit tests for type size by @kkohtaka in #23
• build(deps): Bump codecov/codecov-action from 2 to 3 by @dependabot in #24
• *: Bump up Go version to 1.18 by @kkohtaka in #25
• *: Bump up the version of Go to build a Docker image by @kkohtaka in #26
• refactor: Add unit tests to improve code coverage by @kkohtaka in #27
• build(deps): Bump alpine from 3.9 to 3.15.4 by @dependabot in #28

Full Changelog: v1.0.2...v1.0.3