output order is the reverse of what it should be.

[ghost]

Thank you for creating this plugin. It does a wonderful job except for one serious issue...

If I have:

// dependency/index.js
import './styles.css';
export default { ... };

// dependency/styles.css
.Foo { color: red }

// project/index.js
import './styles.css';
import dependency from 'dependency';
export default { ... };

// project/styles.css
.Foo { color: blue }

then when running rollup in the project directory, <div class=Foo> will be red instead of blue because dependency/styles.css is appended later in the final stylesheet, as if the HTML contained:

<link rel=stylesheet href="project/styles.css">
<link rel=stylesheet href="dependency/styles.css">

However, styles in the project should override styles in the dependency, as if the HTML contained:

<link rel=stylesheet href="dependency/styles.css">
<link rel=stylesheet href="project/styles.css">

Can you please correct the order in which stylesheets are concatenated? Thank you!