Description of the Issue

The PowerShell lexer doesn't recognize some (new?) keywords.

• try
• catch
• throw
• finally

Steps to Reproduce the Issue

Example 1

try
{	Write-Host "try"
}
catch [ExceptionTyp]
{	Write-Host "catch"
}
catch
{	Write-Host "catch"
}
finally
{	Write-Host "finally"
}

Example 2

if ($test)
{	throw "Error message"
}

Expected Behavior

Show the listed keywords with highlighting

Actual Behavior

The mentioned keywords are not highlighted.

Debug Information

Notepad++ v7.5.9 (32-bit)
Build time : Oct 14 2018 - 15:02:52
Path : C:\Program Files (x86)\Notepad++\notepad++.exe
Admin mode : OFF
Local Conf mode : OFF
OS : Windows 10 (64-bit)
Plugins : DSpellCheck.dll mimeTools.dll NppConverter.dll NppExport.dll ComparePlugin.dll MarkdownViewerPlusPlus.dll NPPJSONViewer-win32.dll nppplugin_solutionhub.dll nppplugin_solutionhub_ui.dll PluginManager.dll XMLTools.dll