Enable user scripts to highlight forwarded e-mails
Dit script moet niet direct worden geïnstalleerd - het is een bibliotheek voor andere scripts om op te nemen met de meta-richtlijn // @require https://update.greatest.deepsurf.us/scripts/40782/265774/Library%20for%20e-mail%20forward%20highlighting.js
This library is used by Tampermonkey user scripts via @require, enabling them to highlight inline forwarded e-mails (lines prepended by ">", ">>" etc.) with different background colours per quoation level. The library expects consuming user scripts to also @require mark.js and jQuery.
