reduced time to acquire AT from at-spi from ~5 s to ~3.5 s
* refined acquisition of States and Attributes
* canceled acquisition of Component when node is not showing and
visible according to the document
(https://gnome.pages.gitlab.gnome.org/at-spi2-core/libatspi/iface.Component.html)
* pruned windowcoord and parentcoord, merged size and screencoord into
one at-spi invocation
* canceled acquisition of Document
* refined acquisition of RoleName
The file is empty.