49.7
====
* Fix extending screenshot area selection to monitor edges [Ramez; !4158]
* Don't notify dash elements twice to screen reader [Sergio; !4182]
* Add rate control to VA-API H.264 screencast pipelines [Mikhail; !4171]
* Fix autorun notification for connected USB drives [Sebastian; !4187]
* Fix spinner resetting on each key press in overview search [Vicente; !4191]
* Open session/a11y menu on login screen on either button [Florian; !4225]
* Misc. bug fixes and cleanups [Bilal, fthx, Marco, Bilal, Florian, Sebastian;
  !4176, !4077, !4183, !4180, !4135, !4194, !4197, !4220]

Contributors:
  Vicente Bertolotti, Sergio Costas Rodriguez, Bilal Elmoussaoui, fthx,
  Mikhail Gavrilov, Sebastian Keller, Ramez Medhat, Florian Müllner,
  Marco Trevisan (Treviño)