*-ModuleManifest should support SemVer 2.0

[vojtechvit]

PowerShell Core 6.0 seems to be adding support for SemVer 2.0. Prerelease manifest field value validations should be updated to allow series of dot separated identifiers.

This is something we want to address in the future, but we cannot at this time.
The PowerShell Gallery is based on NuGet v2, which only supports SemVer 1.0.0 prerelease versions.

[ThomasNieto]

@edyoung does PowerShell Gallery support NuGet v3 now? I see a v3 Uri defined in code but it's not used anywhere.

https://github.com/PowerShell/PowerShellGet/blob/0f667f29a4cecd9b8abee1a4df63b2c31f7a753a/src/PowerShellGet/private/modulefile/PartOne.ps1#L115

[edyoung]

No, it doesn't

[ThomasNieto]

@edyoung Is there a timeline for PSGallery to support v3?