Situation

As 3.0.0-dev.2 was just released, we should think about to coordinate the next development release.

Suggested Plan

Some ideas for this release:

• Define own hierarchy of exceptions? #248: Define own hierarchy of exceptions?
• Rethinking __init__ of VersionInfo class? #303: Rethinking __init__ of Version class?
• Rework some "private" functions in semver.version? #309: Rework some "private" functions in semver.version?
• Should _comparator return NotImplemented instead of raising TypeError? #316 Should _comparator return NotImplemented instead of raising TypeError?