Changelog for the DNS flag
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.
Actually detect no args
Fully disable sandbox
Let go-args validate required stuff
Remove sandbox options that are set by the included wine profile
Don't generate the manpage anymore

It makes the build process too complicated
Mention GE Wine in the tutorial
That alias syntax doesn't work here, don't need it anyways
Better handling for when Install options are set but not RunExe