Get-ItemField command ignores the -Language parameter

[Krusen]

Expected Behavior

The Get-ItemField command should respect the -Language parameter and return fields for all specified langues.

Actual Behavior

The command ignores the -Language parameter by setting the Language property to null and returns only fields for current item language.

https://github.com/SitecorePowerShell/Console/blame/master/Cognifide.PowerShell/Commandlets/Data/GetItemFieldCommand.cs#L38

Steps to Reproduce the Problem

N/A

Proposed Solution

I think just removing the line Language = null; would fix this and I don't see how this could cause any issues, but I haven't tested it.

If the command is not supposed to support the -Language parameter then the documentation should be updated and the command could just extend BaseLanguageAgnosticItemCommand instead of BaseItemCommand as all it does is add language support.