- Editing a style's Text Frame General Options updates each option a
frame still shares with the style, so a frame's own inset stays while
a new column count reaches it.
- style.object.create and edit refuse corner sizes outside 0-10000 pt
instead of clamping them.
- IDML import: a style that turns Stroke & Corner Options on without
corner attributes of its own takes all four corners from the styles
it is based on.