Derived stores (Blackbox v1.0.2)

This release adds a new blackbox type, as in derived boxes, similar to the svelte implementation

Docs were improved as well, adding easier to read and well documented code examples.

What's Changed

• feat: add derived box by @asynched in #1
• feat: update docs by @asynched in #2

New Contributors

• @asynched made their first contribution in #1

Full Changelog: https://github.com/asynched/blackbox.js/commits/v1.0.2