* ignored `undefined` and `null` value values for intellisense
We are not completely ignoring "all" falsey values, because then we
would get rid of `0` values (e.g.: `p-0`) which is not what we want.
* update changelog
* Add failing tests for negative utility detection
We're not generating them properly in all cases, when using at-apply we sometimes crash, and safelisting doesn't currently work as expected.
* Refactor
* Generate utilities for negatives before and after the prefix
* Properly detect negative utilities with prefixes in the safelist
* Refactor test a bit
* Add class list tests
* Update changelog
* WIP
* Add failing test for negating default values
* Add dynamic negative value opt-in (#5713)
* Add `supportsNegativeValues` plugin option
* Update `getClassList` to support dynamic negative values
* Add test for using a negative scale value with a plugin that does not support dynamic negative values
* Support dynamic negation of `DEFAULT` values (#5718)
* Add test case
Co-authored-by: Brad Cornes <bradlc41@gmail.com>