This is a maintenance release. The following items were fixed and/or added:

- Audio: fixed a regression in the Core Audio backend causing a hang when returning from host sleep when processing input buffers
- Audio: fixed a potential crash in the HDA emulation if a stream has no valid mixer sink attached -- thanks to Rink Springer (rink@…)
- Windows hosts: fixed an incompatibility with recent versions of Windows 10 (bug #17977)
- Windows hosts: fixed a number of brigded networking driver crashes (bug #18046)
- Linux Additions: disable 3D for recent guests using Wayland (bug #18116)
- Linux Additions: fix for rebuilding kernel modules for new kernels on RPM guests
- Linux Additions: further fixes for Linux 4.19
- Linux Additions: fixed errors rebuilding initrd files with dracut on EL 6 (bug 18055#)
- Linux Additions: fixed 5.2.20 regression: guests not remembering the screen size after shutdown and restart (bug #18078)