Don't break exes with spaces in their names
Actually don't warn about that during installs
Buster isn't available anymore
It's okay if it's a symlink
Don't warn about no InstallExe during install
Only try to set sandbox DNS when the option is used explicitly
Added Added `--sandbox-dns` for setting a DNS resolver ...

...in a sandbox via Firejail.
Added `--sandbox-cpu` for limiting CPUs in a sandbox via Firejail
Only show changed values with wem cfg --no-unchanged FOO
Don't write an extra newline
That's the actual required version
Improved fish completions

Also moved bash and fish completions to separate files, use the embed
directive to include their content.