Previous fix for bad map design imports had an incorrect range and no way to manage v2.0.8- and v3.0.0+ dumps.
Import/Export for map design patterns now supports both map sizes (old and new).
It will accept 2.0.8 dumps and pad them to work on 3.0.0 as well as trim previously mangled ones, or 3.0.0 dumps down to fit on 2.0.8 saves.
Byte padding methods added to ArrayUtil for this padding and for future map flag import padding fixes.
Updates the Field Item Editor to render layers based on the entire map, and the per-patch positioning of each layer.
Import/export will gracefully handle upgrade/downgrade, and viewport import/export will gracefully update tiles rather than a per-acre basis.
Performance has also been slightly improved; no allocation is done anymore when updating the image.
The second parameter of `Array.CopyTo` takes an integer that represents the index in array at which copying begins. Therefore in this case it should be set to 0 instead of the array's length.
Different means of expression for the 8 byte item structure's FreeParam
Will be expanding the ItemEditor so that it has a checkmark to toggle Extension Item editing behavior.
Removes IHeldItem as there's no need to abstract it.
Extracts logic from the building & terrain & field item editors for reuse / separation of concerns
Have FieldItemEditor select between Items & Terrain so that you can change the popup menu mode (view set delete)
Not sure how I want to show the terrain names...
