Full Semver support

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## Feature request

**Is your feature request related to a problem? Please describe.**
The semver standard does support, for example, build numbers that are indicated by a plus sign (e.g. as in `1.2.3+4`). The regex in the info.xsd does not allow them. There are two regex on semver.org that could be used: https://semver.org/#spec-item-10