- Update to version 1.7:
* Unlock the screen on SIGUSR1
* Use mlock for password buffer
* Delete whole utf8 character on backspace
* Use shm_open instead of mkstemp
* Check for existence of subcompositor
* renderer: work with current buffer locally
* Ensure that ext_session_lock_v1.unlock_and_destroy is processed.
* shadow: make the result of crypt() const
* Fix loss of clarity with odd-sized centered image
* bash-completion: localize variables
* wayland-scanner: use native version to support cross-compilation
* Drop xdg-output requirement