--make head thickness margin and tail thickness
margin totally independent
--ability item: reanchor it based on the screen edge
like applets are already doing
--adjust tasks animations in order to take into
account the anchoring
--parabolic effect adjust calculations to use
new thickness margins
-- The new approach reduces mask area calls to
barely minimum. Input mask is used instead to
specify the area for which we accept input.
-- The new approach solves also the BLACKLINE issue
when hovering the view at startup. This is because
at all times the full window area is drawn.