Log Message:
Update to 2.12.1:

What's new in at-spi2-atk 2.12.1:

* Clean up socket files and directories on exit (BGO#684076).

What's new in at-spi2-atk 2.11.92:

* Bump minimum libdbus version needed, since we use a function
  introduced in 1.5.

What's new in at-spi2-atk 2.11.91:

* Improve compatibility with at-spi2-registryd <= 2.10.

* Collection: Fix an infinite loop when encountering a NULL parent

What's new in at-spi2-atk 2.11.90:

* Add AtspitableCell, tracking the new atk interface

What's new in at-spi2-atk 2.11.5:

* Allow sending of properties with events upon request (BGO#708695).

What's new in at-spi2-atk 2.11.3:

 * Fix atspi_text_get_bounded_ranges

* document: add support to current page and page count (BGO#719508).

What's new in at-spi2-atk 2.11.2:

* Add new roles and states to track atk (BGO#710464, BGO#712608, BGO#712609).

What's new in at-spi2-atk 2.11.1:

* Fix Contains method for components (BGO#710730).