Multi-line function/mixin calls should be acceptable when enforcing space-between-parens and indentation

[BPScott]

Sometimes the argument list when calling functions/mixins ends up being quite long so it is nice to put them onto multiple lines to make it them more readable. However currently this throws a combination of warnings - two space-between-parens (one for the opening paren, one for the closing paren) and an indentation warning for every line within the arguments. This occurs for native CSS functions (e.g. linear-gradient()), user-defined functions and mixins. To see this in action, run the following scss with the ruleset {'indentation': 1, 'space-between-parens': 1}:

// Top-level mixin
@include hello(
  $foo,
  $bar,
  $baz
);

.foo {
  // Nested Mixin
  @include hello(
    $foo,
    $bar,
    $baz
  );

  // CSS built-in function
  background: transparent linear-gradient(
    to bottom,
    #ff0000 0%,
    #00ff00 40%,
    #0000ff 40%
  );

  // User-defined function
  content: goodbye(
    $foo,
    $bar
  );
}

I would expect this to raise no warnings.

[bgriffith]

Have this fixed locally for the space-between-parens rule.