PR Summary

Make CompatibilityCollector able to parse a single version String.
I found it odd that the version number is -1 when not being specified (System.Management.Automation.SemanticVersion uses a 0 in that case) but I tried to be at least consistent with the current implementation...

PR Checklist

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• Summarized changes
• Change is not breaking
• Make sure all .cs, .ps1 and .psm1 files have the correct copyright header
• Make sure you've added a new test if existing tests do not effectively test the code changed and/or updated documentation
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