Allow to change keybindings

[hadronized]

Is your feature request related to a problem? Please describe.

I’d like to be able to create my own keybindings. I had a look at where you define them, and tried to put them in my ftplugin/clap.vim file, but it doesn’t work (I have a non-us keyboard layout, so the default keybindings are pretty pointless).

Describe the solution you'd like
I would like to be able to remap keys via either a dictionary, or a mechanism allowing me to use ftplugin (like a mode-like mechanism).

Describe alternatives you've considered
Basically that is currently driving me off the plugin, so I’m currently using fzf.

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[liuchengxu]

This should work if you are using neovim:

autocmd FileType clap_input xxx

See #66 (comment), also #116 (comment). If you are using vim, it's very inconveinent for change the keybindgins for now, still haven't come up with a satisfying solution.

[hadronized]

I’m using neovim, so I’ll try that! Thanks!

[hadronized]

Works as a charm, thanks a lot! That should be in the doc, it’s very practical! 😊

[liuchengxu]

Thanks for the remainder, always forgot to add it in the doc :).