Script:
Add possibility to configure where grub-btrfs.cfg is created
Add possibility to configure grubs ${prefix} variable
Suppress warnings when mounting
Add possibility to pass custom kernel parameters to the kernel command line when booting a snapshot
Do not display a submenu entry in the grub main menu when no grub-btrfs.cfg exits (thanks @kevinchevreuil)
Delete grub-btrfs.cfg at when the script executes to prevent dead entries (thanks @kevinchevreuil)
Daemon:
Add option to use old timeshift version <22.06
Add option to watch snaptshot directories recursively
Add possibility to watch several snapshot directories
Makefile
Automatically update grub at install (opt-out with GRUB_UPDATE_EXCLUDE=true) (thanks @kevinchevreuil)
Make installing the documentation (manpages, readme, license) optional
Readme / Manpages
Add instructions for the new daemon options
Revisit Readme with many improvements (thanks @danboid)