.humacs.d -> .emacs.d

Problem

Lots of moving targets:

• emacs (we currently require 26.3)
• spacemacs (currently following develop)
• our spacemacs configuration (always evolving)
• The community elpa / package dependencies update several times a day

Solution

Create a repo with submodules pinning our dependencies

git clone git@github.com:humacs/.humacs.d ~/.emacs.d

The submodules are defined in .gitmodules

cd ~/.emacs.d && git submodule init && git submodule update

We forked and created develop branch, which can follow our dependencies

Issues

elpa-mirror is producing errors when used

Seems related to package signing