* GCC 10 support.
* clang 10 support.
* SBAT support.
* LUKS2 support.
* Drop small MBR gap support.
* Xen Security Modules (XSM/FLASK) support.
* The lockdown mechanism similar to the Linux kernel one.
* Disable the os-prober by default.
* Many backports of GRUB distros specific patches.
* BootHole and BootHole2 fixes.
* XFS bigtime support.
* ...and tons of other fixes and cleanups...
(cherry picked from commit 963b0a1dbf32b80eb6375973bff48af313c2a7c5)
e04ad378fd