fisher: fisher overwrites my fishfile if it is a symbolic link; doesn't work with stow

I use stow to store my dotfiles in GitHub and run stow to symbolic link my fishfile.

In version 2, this used to work just fine. But it looks like in v3, symbolic files are no longer supported. After running fisher, the file is removed and replaced with a new file.

Here is what I mean:

$ la ~/.config/fish/fishfile
lrwxr-xr-x    44 amirraminfar staff  6 Oct 12:18   -- /Users/amirraminfar/.config/fish/fishfile -> ../../.dotfiles/fisher/.config/fish/fishfile

After running fisher:

.rw-r--r--   289 amirraminfar staff  6 Oct 12:19  /Users/amirraminfar/.config/fish/fishfile

So it is removed and replaced with a new file.

😦