Mappings conflict with gd

I understand why this plugin remaps n, N, #, *, g#, g* but why gd and gD?

I had `gd` mapped to 'go to definition' as in the example configuration given by [CoC](https://github.com/neoclide/coc.nvim). I think it makes sense to add an option to disable these two. I did not know these were default vim mappings, nor do I know what they do. Evidently the writers of CoC don't either.