Don't set Slot to 3 for an empty slot
Move slot check comparison to PCD class
Allow PCD->PGT 'swap' override to just set the slot
Update alert message to indicate source type first
#730
Move System.Drawing usage out of Core to WinForms, as System.Drawing is
not in .NET Core/Standard. Simple methods to return resource name
strings have been added instead.
Grab an example PKM (from main window) to get the current value to
assist users in creating their modification scripts.
Added 3 tooltips for hovering over property/type/value controls