Ability to support regex for the filter option

[maaaaz]

Hello,

Last but not least, it would be great to be able to specify a regex for the filter option.
I'm facing a lot of situation where for instance I'd like to hide any request returning a 4xx status code (mostly during large engagements, when you enumerate URL for a lot of targets).

Today I can only use the logic you implemented for filter =,<,>,!=,<=,>=.
Tomorrow I'd like to type --filter c!=4.*.* or --filter c!=4**

Cheers guys !