Command selection of `ctrl+n` and `ctrl+p` instead of `↑` and `↓`

[ikuwow]

Feature request.

It's convinient to select commands by ctrl+n and ctrl+p instead of ↑ and ↓.

$ gitstatus
-bash: gitstatus: command not found
$ fuck
gstat [enter/↑/↓/ctrl+c] # <= here, selection can be changed by ctrl+p or ctrl+n

[ikuwow]

It's released. Thank you @nvbn 👍