Feature Idea: "Tighten" Imports

[brasilikum]

First I want to thank all contributors, this package really makes elm so pleasant to develop!

I had the idea to introduce a feature where you can with one command remove unused imports and convert (..) to the concrete things actually imported from each package.

Motivation: During development, I prefer to import (..) for less hassle, but as soon as someone else has to read the code, clear imports are key.

Let me know what you think!

[halohalospecial]

Hi @brasilikum, these are great ideas. For removing unused imports, you can use elm-analyse for now :)