Semantic Versioning
The concept of semantic versioning, or SemVer for short, is simple — developers should be able to tell at a glance whether an update is likely to cause problems or not. We promise to make releases in a manner that is compatible with SemVer. In a nutshell:
  • All releases of the form A.*.* will be compatible with each other. Version B.*.* is guaranteed to break everything.
  • All releases of the form A.B.* are simple bug-fixes. It should be a no-brainer to update from A.B.C to A.B.D, no matter what C and D are, and we guarantee as much as humanely possible that everything will keep working.
  • All updates from A.B.* to A.C.* contain new features, but as much as humanely possible, won’t break any existing functionality.
As a rule of thumb, updates are by definition risky and you should always test them in a staging environment first. But using SemVer, we try our best to offer you bite-sized updates that explain the differences between them at a glance.
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