The order and way include macros were structured was chaotic, with no
real common thread between files. Try to tidy up the mess with some
common scheme, to make things look less messy.
This actor is a non-reactive container that autoembeds itself into
the feedback window group in the compositor. The API is meant to
help on creating things attached to pointer/touchpoints, with an
X/Y attachment offset, and following the position of certain events.
