eigen @ 9836e8d link is dead

[philoop1]

eigen @ 9836e8d seems to be deleted.

[jpnielsen]

I don't know what's up with github.com. The submodule resolves in the git shell (irrelevant lines removed):

#git clone https://github.com/GuitarML/FunBox.git
Cloning into 'FunBox'...
...
# cd FunBox/
# git submodule update --recursive --init
...
Submodule 'eigen' (https://gitlab.com/libeigen/eigen) registered for path 'eigen'
...
Cloning into '/root/github/FunBox/eigen'...
warning: redirecting to https://gitlab.com/libeigen/eigen.git/
...
Submodule path 'eigen': checked out '9836e8d035f72003b4af070c0da73660b28b8d2e'
... 

[xconverge]

I believe that it is fine, github just doesn't integrate nicely with a gitlab repo (https://gitlab.com/libeigen/eigen)

As pointed out above, the submodule should pull with no issues