What's new in at-spi2-atk 2.26.2:

* Fix a couple of cache-related functions so that they don't return
  without unlocking the mutex (bgo#793625).

What's new in at-spi2-atk 2.27.92:

* Fix a couple of cache-related functions so that they don't return
  without unlocking the mutex (bgo#793625).

* Dropped autotools support. Building is now done using meson.