RegExp for semantic versions.

[Paebbels]

Might be added to pyTooling.Version.SemVersion, because it can be useful in that package as well. However, I don't think it's worth making Tip dependent on pyTooling.Version just for this line. This is in fact copied from https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string as-is.

A possible enhancement to Tip is to build a container image in a separated workflow. Then, Tip itself would not need to install the dependencies at runtime; it would consume a ready-to-use ghcr.io/pyTooling/Tip container. In that context, having additional dependencies would be less harmful (not at all). Moreover, if we did that, we might add a proper CLI to Tip, through pyAttributes.

Originally posted by @umarcor in pyTooling/Actions#10 (comment)

[umarcor]

FTR, tip was renamed to releaser, and it is now based on a container. See https://github.com/pyTooling/Actions/tree/main/releaser.