co-author 0.1.3

Co-Author your git commits from the command line
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use git2::Config;

#[cfg_attr(test, mockall::automock)]
pub trait ConfProvider {
	fn get_editor(&self) -> Option<String>;
}

pub struct GitConfProvider;

impl ConfProvider for GitConfProvider {
	fn get_editor(&self) -> Option<String> {
		Config::open_default().ok()?.get_string("core.editor").ok()
	}
}