* utilities and tests in place for textDecorationColor and textDecorationOpacity
* change 'backgroundColor' to 'textDecorationColor' in corePlugin declaration for latter
* remove explicit textDecorationOpacity utility (the JIT slash syntax suffices)
Co-authored-by: Michael Warner <michaelwarner@Michaels-MacBook-Pro.local>
This adds `grow-*` and `shrink-*` utilities as aliases for `flex-grow-*` and `flex-shrink-*` since those names are unnecessarily verbose. We will stop documenting the long form ones and consider them deprecated.
```diff
- <div class="flex-grow-0 flex-shrink">
+ <div class="grow-0 shrink">
```
* Add `break-before` utilities
* Add `break-inside` utilities
* Add `break-after` utilities
* Add `break-before/inside/after` utilities to basic usage test
* Remove `break-before` and `break-after` utilities that have no browser support
* Rename `break-inside: avoid-column` utility to `break-inside-avoid-column`
* move `./tests/jit` to `./tests`
* make tests consistent
Abstracted a `run` function and some syntax highlighting helpers for
`html`, `css` and `javascript`.
