Hauke Sommerfeld

This PR adds a headless Toast component as well as the respective demo page.

Consider visibility modifier of `@Lenses` annotated data classes

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### Current state Currently, when a data class has a visiblity modifier other than `public`, the generated lenses will leak their non-public receiver type. This causes the compilation to fail....

Reconsider `RootStore` update behavior

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### Current behavior Currently, a `RootStore`'s value is only updated (i.e. `data` flow emits a new value) if the Store receives a _new_ value. If the Store receives a value...

This PR adds a headless `combobox` component inspired by the [HeadlessUI Combobox](https://headlessui.com/react/combobox). The component can be created via the `combobox` factory. For the full documentation visit the [online documentation](https://www.fritz2.dev/headless/combobox/). _During...

Move `whenever` function out of `Tag` interface

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Currently, the convenience functions `T.whenever(Boolean): Flow` and `Flow.whenever(Boolean): Flow` are defined inside the `Tag` interface and are thus limited to such contexts. They do not rely on any `Tag`-specific apis,...

Headless combo box's KDoc references wrong pages in the online documentation

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Some KDoc comments in the headless combo box still reference the list box's online documentation and need to be revised.

Current builds of the website contain styling issues such as an invisible sub-heading on the main page, missing card-header backgrounds and missing icon-backgrounds in the examples cards. PR #898 implicitly...

When a PopOver is opened and another component with a dropdown and a toggle element is opened via a button click as well, the first overlay is not closed as...