Keymaps don't work if `default_mapping` is disabled

[sbmueller]

On 7514301, I have issues manually mapping keys to functions. It works fine if default_mapping is set to true: I can overwrite mappings with the keymaps variable. However, if I set the former to false, the mappings of keymaps are not applied. Minimal example:

require'navigator'.setup({
  default_mapping = false,
  keymaps = {
    {key = "gr", func = "references()"},
  },
})

With this, no key maps are applied.
I want to disable all <Space> mappings completely since I use space as non-leader key.

[ray-x]

I committed a change to master and please check if it works

[sbmueller]

Awesome it works, thank you!