The "Facing" property for a painting has changed name to "facing", which just changes the initial letter's case.

It also breaks every script in the world that uses the property.

(And, while we're at it, the new 'variant' property uses lowercase, where most properties are uppercase.)

To me this requires a few things to fix:

1. Change the property name back (the minimal fix)
2. Make the property name matching case insensitive so the user doesn't have to remember case (should be relatively simple)
3. After #2, make all properties use CamelCase so they all look the same.