* Pictures in headers/footers can be moved, resized and rotated
Hit testing (layout.object_at_in), arrange.bounds/position/nudge/group and the canvas selection, drag, resize and rotation handles used to be body-only, so pictures in headers and footers could not be moved (#82). They now work within their own header/footer story: drag to move, handles to resize, rotation handle to turn, arrows to nudge. Regression test: header_pictures_can_be_resized_and_dragged.
* Credit DevCoderMax (Gleyson do Nascimento Carvalho) in About
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Co-authored-by: Brandon Thomas <echelon@gmail.com>