Support @include for scss code

At the moment the plugin can change a position of @include rule for scss code which is not safe and can lead to a wrong result. Example: Input

a {
 @include bla;

 color: red;
 display: block;
}

Output

a {
  display: block;

  color: red;
  @include bla;
}

It’d be really good to preserve the position of @include rule.

[boccob]

Works great. Thank you!

[Siilwyn]

All right, thank you for testing! I have published the change under under version 3.0.1.