Remove submodules: smex, mc and expand-region
Add use-package as submodule
Remove submodules s, dash, fold-this and flycheck. Use elpa instead
apperance: cleanup
sane defaults: cleanup
Remove unused files
Remove deprecated files
Remove submodules that can be installed using elpa
Reorg after switching to 'use-package'
Update the list of elpa packages
Make sure that dash & s are installed