'''Semantic versioning''' or '''SemVer''' is an approach to [API] versioning that says roughly the following:

   * Your version number should have the format "MAJOR.MINOR.PATCH" where each of MAJOR, MINOR and PATCH is an integer >= 0.

Once you hit 1.0.0

   * Increment MAJOR when you break compatibility;
   * Increment MINOR when you implement features or deprecate features without breaking them;
   * Increment PATCH when you fix bugs;
   * If you increment MAJOR reset MINOR and PATCH to zero; if you increment MINOR reset PATCH to zero. 

There is a specification for semantic versioning that goes into more detail at http://semver.org/.

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