We disabled preflight earlier so we can safely enable the base layer
again.

fixes #211

fixes #198

fixes #212

refs #127

This increases the chance of a perfect 3 column layout.

We often find ourselves adding flex styles to buttons. Instead, this
should be the default.

Although the docs [1] specify a class on Popover components, this
doesn’t seem to be passed down. We help ourselves with a selector for
the data-headlessui-state attribute .

[1] https://headlessui.com/vue/popover

* deactivate buttons and show progress indicator while saving
* place primary button first
* add spacing between buttons
* add support for custom labels for cancel and save

The FormGroup’s save-indicator would jump around when used in
combination with the FormTable. We now have a more tight coupling for
these components so that the FormTable can influence the FormGroup’s
rendering.

fixes #199

The update method can be used to update more than one field for which
errors might be displayed in separate locations.

Feedback hasn’t been to good, so we remove these again.

refs #206

fixes #203

fixes #210

fixes #209