Support Hyphenation for German words containing `*`, `:` or `_`(e.g. `Mitarbeiter*innen`). Requested multiple times in the WP.org support forum: [1](https://wordpress.org/support/topic/gendering-issue/), [2](https://wordpress.org/support/topic/worttrennung-in-ge-genderten-worten-mit-moglich/).
