Allow turning on and off styles, relative to current settings

[docwhat]

It would be nice to be able to turn on and off styles relative to the current settings.

For example, using - could disable a style, and + could enable a style.

Some examples:

• --style=full --style=-numbers -- Everything except line numbers.
• --style=full,-numbers -- Everything except line numbers.
• --style=+headers,+rule,-changes -- Default, with headers and rules without changes.

Related issues:

• #5
• #72
• #1032
• #1161
• #1741

[einfachIrgendwer0815]

Also related to #1032

[docwhat]

Also related to #1032

I missed that. Thanks!

That has the best conversation, and I would be okay with closing this in favor of that issue. Maybe the author could steal my list of related tickets to put in the description.