What's new in pyatspi 2.1.2: * Fix traceback when creating match rules with attribute sets * Add atspiVersion(). * Fix several table functions * Fix makeSyncType to generate a proper enum (will be needed when enum-types branch of at-spi2-core is merged). * Add clearCache(). * Cache eventTypes in events for performance reasons. * Add GPL2 license because a couple of test files are licensed under it.