Formatting breaks certain kinds of interpolation

[jakewski]

Hello, love stylus-supremacy and really grateful for this project.

I found some weird interpolation issues when trying to add this as an autofixer for a large codebase.

1. Perenthesis + %

$padding = 12

.class1
  padding ($padding)%

gets formatted to:

$padding = 12;

.class1 {
  padding: $padding %;
}

which doesn't compile.

2. Interpolated mixin

text-blue()
  color blue
  
.class1
  text-{'blue'}()
  transform ($padding)ms

turns into

text-blue()
  color blue

.class1
  text-{'blue'}
  transform $padding ms

and if you run it again, it turns into:

text-blue()
  color blue

.class1
  text-

  transform $padding ms

Thanks in advance for your time. Again, love this project

[Shyam-Chen]

#45