[Suggestion] Local plugin - avoid update

If I symlink to my own plugin which is not on a repo, I can add in my config.fish "my_name/my_plugin" even if no repo exists

Then when I "fundle update" it will cause an error.

Maybe we could add an option like this:

fundle plugin my_name/my_plugin --local

It will not try to update it. Could also do it with a dummy file in the plugin directory called 'local' and then it would exclude it.

What do you think?

PS: atm I am not really able to submit PRs, I'm still a beginner with Fish but I write down my ideas in issues :P

Start with the config.fish plugin entry and the fundle update command described in the issue. Trace how the update operation handles a plugin that is not in a repository, then define and document the chosen local-plugin form; done means that plugin is accepted without causing fundle update to try updating it.

Written by the indexing model from the issue text.