No need to override default Vim behavior for this key bindings since
they are available on SPC m n and SPC m p already.
Note: We could add a transient state to go nicely with SPC m n and SPC m p.
- Prefer add-to-list function to alter golden-ratio variables so the lists
are less likely to grows as users reload their spacemacs config.
- Move some config to layers when appropriate
- Sort alphabetically the values
- Remove some duplicates in exclude-modes