Use regex in 'include' option

[ATrogolo]

Hi @jeffposnick,
what do you think about if the option 'include' can accept regex items?

This addresses a problem when the SplitChunks Webpack plugin returns chunks' names which share a "common" part.
i.e.:
package1-package2-vendors.[hash].js
package3-package4-vendors.[hash].js

As if we'd like to preload every asset with "vendors" in the chunk name.

Please, let me know about

Cheers,
Andrea