- Rename contrib directory to layers
- Add new variable dotspacemacs-distribution
- Move spacemacs layer to layers/!distribution
- New layer spacemacs-core in layers/!distribution
- User can now set dotspacemacs-distribution to spacemacs or
spacemacs-core (default spacemacs)
spacemacs-core is very lightweight layer sufficient to build upon
spacemacs.
In Finnish/Swedish/other keyboard layouts the `option` key is needed to
type some common characters such as `{[]}~` (#973) so make mapping it to
`meta` conditional.