* add url to resolveArbitraryValue list
* add `asURL` data type
* add `bg-[url('..')]` regex
* allow for `resolveArbitraryValue` to be an array
* prevent spaces around `-` when in a `url`
* add tests to verify `bg-[url('...')]` and `stroke-[url(...)]`
* move to real regexes
These regexes are only calculated once so we don't really have a
performance penalty here. However, it's a bit nicer to do it this way
because now you don't have to think about the proper escapes.
/.*/.source will basically take the source of the regex ".*" without
flags and converts it to a string with the proper escapes for you.
Fun fact, this `.source` property has been supported since Chrome,
Firefox and Safari version 1.
* allow for `'>'` in `content-['>']`
* move `./tests/jit` to `./tests`
* make tests consistent
Abstracted a `run` function and some syntax highlighting helpers for
`html`, `css` and `javascript`.
