SNAPSHOT Versions

https://stackoverflow.com/questions/5901378/what-exactly-is-a-maven-snapshot-and-why-do-we-need-it

• A SNAPSHOT version denotes a version that has not been released yet.
• The idea is that before a 1.0 release (or any other release) is done, there exists a 1.0-SNAPSHOT. That version is what might become 1.0. It’s basically “1.0 under development”. This might be close to a real 1.0 release, or pretty far (right after the 0.9 release, for example).
• The difference between a “real” version and a snapshot version is that snapshots might get updates. That means that downloading 1.0-SNAPSHOT today might give a different file than downloading it yesterday or tomorrow.
• Usually, snapshot dependencies should only exist during development and no released version (i.e. no non-snapshot) should have a dependency on a snapshot version.
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