What version numbering scheme to use?

Question

I\'m looking for a version numbering scheme that expresses the extent of change, especially compatiblity.

Apache APR, for example, use the well known version number

Answer 1

I would recommend the Semantic Versioning standard, which the Maven versioning system also appears to follow. Please check out,

http://semver.org/

In short it is .., and you can add additional rules to the anything else part as seems fit to you. eg. --.