Merge branch 'cally-merge'

Merge branch 'cally-merge'

* cally-merge:
  cally: Add introspection generation
  cally: Improving cally doc
  cally: Cleaning CallyText
  cally: Refactoring "window:create" and "window:destroy" emission code
  cally: Use proper backend information on CallyActor
  cally: Check HAVE_CONFIG_H on cally-util.c
  docs: Fix Cally documentation
  cally: Clean up the headers
  Add binaries of the Cally examples to the ignore file
  docs: Add Cally API reference
  Avoid to load cally module on a11y examples
  Add accessibility tests
  Initialize accessibility support on clutter_init
  Rename some methods and includes to avoid -Wshadow warnings
  Cally initialization code
  Add Cally