Add handling for multi-line regular expressions with verbose syntax.
Add handling for multi-line regular expressions with verbose syntax.

Verbose syntax needs whitespace characters and #-character to be escaped.
Using it only for multi-line strings, avoids having to fix all the modules
and allows for using the simpler syntax for simple regular expressions.

Uname-a/knife_scraper,Uname-a/knife_scraper,Uname-a/knife_scraper