branch feature/completions-highlight-modifications created (now ede71d0)

[Jimmy Aguilar Mena]

ergus pushed a change to branch feature/completions-highlight-modifications.

        at  ede71d0   Simplify setting keymaps.

This branch includes the following new commits:

       new  2344367   Insert some modifications to implement completions 
highlighting.
       new  094ed4b   Document the changes in the API for Completions.
       new  65d1038   Add completions-highlight-mode initial implementation.
       new  09520f7   Fix initial comment in completions-highlight file.
       new  e558c57   Improve keymap handling.
       new  f12bfdc   Fix recursive set-keymap-parent in completions-highlight.
       new  9ac4a61   Fix corner case when going out of bounds
       new  ecc7901   Simplify numeric argument
       new  ede71d0   Simplify setting keymaps.