Follow the convention of Nerves

[zacky1972]

Reference is here:

https://qiita.com/mnishiguchi/items/e5815670297796aba784

[zacky1972]

• Squash the commits of PR into a commit when merging into the main branch.
• Comment v<major>.<minor>.<patch> release log when releasing a new version.
• Follow the semantic versioning 2.0.0 when describe the version number <major>.<minor>.<patch>: https://semver.org/lang/ja/ and https://semver.org/lang/ja/#semverバージョンを表すバッカスナウア記法
• Use 0.x.0 when developing.
• Release the version 1.0.0 when production, having stable APIs that many users depend on, or having concerns of back conpatibilities.
• Do not use the patch version before the major release.
• Use or condition in case of supporting multiple versions. For example, circuits_i2c ~> 1.0 or ~> 0.3.0 https://hex.pm/packages/bmp280/0.2.12
• Set the Git tag and the GitHub release using the semantic versioning when releasing.
• Publish using hex.
• Use mix format, credo and dialyzer on CI. Install dialyzer to all repositories #60 Install credo to all repositories #61
• Use docs environments: https://github.com/nerves-project/nerves/blob/770e75323506efa63fbe7ca485e855321a0685c7/mix.exs#L21
• Use Dependabot to update dependencies: https://docs.github.com/ja/code-security/dependabot/dependabot-version-updates/configuring-dependabot-version-updates https://github.com/nerves-project/nerves/blob/main/.github/dependabot.yml