MAYBE:
  - Syntax highlight checkboxes and checkbox cookies
  - Different syntax group for heading delimiters

UNLIKELY:
  - Add working links
    - Maybe utilise Vim-Waikiki and override default Vim mappings
    - Open man pages (use ':h :Man')
    - Add 'org-store-link' and 'org-insert-link' implementations
  - Implement Emacs's abbreviations (e.g. '\<s<TAB>')