feat: add support for inverted text (#17)
feat: add support for inverted text (#17)

* add support for inverted text

In addition to the existing styles (bold, italic, underline).

This is not the same as `c.white.bgblack`.

* change: align naming with chalk

https://github.com/chalk/chalk#modifiers

* change: use hex value

fent/irc-colors.js