Fixes
- fix bug that caused VB version detection to fail via #5556 by @davidpanderson
- handling of outdated vboxmanage command options via #5587 by @computezrmle
- Report TIMEOUT from vbm_popen via #5585 by @computezrmle
- Add race mitigation lock to vboxwrapper via #5571 by @computezrmle
- Fix possible endless loop via #5598 by @computezrmle
- Fix 'File name too long' on Darwinvia #5608 by @computezrmle
- vboxwrapper: don't create projects/virtualbox via #5658 by @davidpanderson
- Set virtualbox vrde-property via #5823 by @computezrmle
- Revised heartbeat check via #5864 by @computezrmle
- Heartbeat checks deal with time leaps via #5866 by @computezrmle
Enhancements
- Replace deprecated VBoxManage command via #5542 by @computezrmle
- Avoid compiler warning in vboxwrapper.cpp via #5547 by @computezrmle
- Update is_extpack_installed via #5820 by @computezrmle
- Remove unused launch_vboxvm() via #5842 by @computezrmle