• A versioning scheme. SemVer uses a sequence of three digits (Major.Minor.Patch), an optional pre-release tag, and an optional build meta-tag. In this scheme, risk and functionality are the measures of significance. Breaking changes are indicated by increasing the major number (high risk), new non-breaking features increment the minor number (medium risk) and all other non-breaking changes increment the patch number (lowest risk). The presence of a pre-release tag (-alpha, -beta) indicates substantial risk, as does a major number of zero (0.y.z), which is used to indicate a work-in-progress that may contain any level of potentially breaking changes (highest risk). ← Wikipedia ↑ semver.org

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