Ability to have plugin ignore static CSS files in hmr mode

[mcjfunk]

Thanks for the plugin! I'm hitting an issue with hmr. My base SSR page has a combination of static CSS files that never change and your typical webpack bundled CSS references that do change with code updates. The CSS that never changes contains brand differentiation, so it has to be a link tag, not imported into the JS.

I'm noticing that all css files referenced with <link> tags get a "cache busting" query param appended to them. Is there anyway to tell your plugin to ignore certain <link> tags?