Lint vertical spacing in Rust code

[emilk]

This is a matter of taste, but I find vertical spacing to be crucial for readability.

I find it difficult to match what docstring goes with what element in this:

enum Meme {
  /// foo
  Badger,
  /// bar
  Mushroom,
  /// baz
  Snake,
}

While this is clear:

enum Meme {
  /// foo
  Badger,

  /// bar
  Mushroom,

  /// baz
  Snake,
}

similarly, I find it good practice to have a blank line before each new type declaration or impl block.

Checklist

• I have read and agree to Contributor Guide and the Code of Conduct

[Wumpf]

This is a matter of taste

definitely is :)
Don't care as much, seems a bit excessive to me to make it a hard rule. I wish this would happen via cargofmt or something else I can run on file save so I don't need to think about it

[emilk]

Not controversial enough apparently. I'll try harder next time.