Support PowerShell versions prior to v5

[ralish]

This will only be done if there's sufficient interest. We make heavy use of several features introduced in PowerShell v5 making backporting to older versions non-trivial. In particular, we'd need to re-implement:

• Symlink handling (no native symlink support)
• Class handling (no native support for classes)
• Enum handling (no native support for enumerations)

If you're interested please signal as such via adding your "reaction". Please avoid commenting on the issue unless you have a contribution to the proposed support beyond simply wanting it to be added.

[ralish]

Not worth doing.