Added Slack to whitelist

This should resolve issue #83

Windows10DebloaterGUI.ps1

@@ -281,7 +281,7 @@ $RemoveAllBloatware.Add_Click( {
             #Credit to /u/GavinEke for a modified version of my whitelist code
             [regex]$WhitelistedApps = 'Microsoft.ScreenSketch|Microsoft.Paint3D|Microsoft.WindowsCalculator|Microsoft.WindowsStore|Microsoft.Windows.Photos|CanonicalGroupLimited.UbuntuonWindows|`
             Microsoft.XboxGameCallableUI|Microsoft.XboxGamingOverlay|Microsoft.Xbox.TCUI|Microsoft.XboxGamingOverlay|Microsoft.XboxIdentityProvider|Microsoft.MicrosoftStickyNotes|Microsoft.MSPaint|Microsoft.WindowsCamera|.NET|`
-            Microsoft.HEIFImageExtension|Microsoft.ScreenSketch|Microsoft.StorePurchaseApp|Microsoft.VP9VideoExtensions|Microsoft.WebMediaExtensions|Microsoft.WebpImageExtension|Microsoft.DesktopAppInstaller|WindSynthBerry|MIDIBerry'
+            Microsoft.HEIFImageExtension|Microsoft.ScreenSketch|Microsoft.StorePurchaseApp|Microsoft.VP9VideoExtensions|Microsoft.WebMediaExtensions|Microsoft.WebpImageExtension|Microsoft.DesktopAppInstaller|WindSynthBerry|MIDIBerry|Slack'
             Get-AppxPackage -AllUsers | Where-Object {$_.Name -NotMatch $WhitelistedApps} | Remove-AppxPackage
             Get-AppxPackage | Where-Object {$_.Name -NotMatch $WhitelistedApps} | Remove-AppxPackage
             Get-AppxProvisionedPackage -Online | Where-Object {$_.PackageName -NotMatch $WhitelistedApps} | Remove-AppxProvisionedPackage -Online
@@ -613,7 +613,7 @@ $RemoveBloatNoBlacklist.Add_Click( {
             #Credit to Reddit user /u/GavinEke for a modified version of my whitelist code
             [regex]$WhitelistedApps = 'Microsoft.ScreenSketch|Microsoft.Paint3D|Microsoft.WindowsCalculator|Microsoft.WindowsStore|Microsoft.Windows.Photos|CanonicalGroupLimited.UbuntuonWindows|`
             Microsoft.XboxGameCallableUI|Microsoft.XboxGamingOverlay|Microsoft.Xbox.TCUI|Microsoft.XboxGamingOverlay|Microsoft.XboxIdentityProvider|Microsoft.MicrosoftStickyNotes|Microsoft.MSPaint|Microsoft.WindowsCamera|.NET|`
-            Microsoft.HEIFImageExtension|Microsoft.ScreenSketch|Microsoft.StorePurchaseApp|Microsoft.VP9VideoExtensions|Microsoft.WebMediaExtensions|Microsoft.WebpImageExtension|Microsoft.DesktopAppInstaller|WindSynthBerry|MIDIBerry'
+            Microsoft.HEIFImageExtension|Microsoft.ScreenSketch|Microsoft.StorePurchaseApp|Microsoft.VP9VideoExtensions|Microsoft.WebMediaExtensions|Microsoft.WebpImageExtension|Microsoft.DesktopAppInstaller|WindSynthBerry|MIDIBerry|Slack'
             Get-AppxPackage -AllUsers | Where-Object {$_.Name -NotMatch $WhitelistedApps} | Remove-AppxPackage -ErrorAction SilentlyContinue
             # Run this again to avoid error on 1803 or having to reboot.
             Get-AppxPackage -AllUsers | Where-Object {$_.Name -NotMatch $WhitelistedApps} | Remove-AppxPackage -ErrorAction SilentlyContinue