* Support signals in Preact islands
* Add a changeset
* Only add signals if we need them
* Refactor signal logic into its own module
* Keep track of the signals used
* feat: pass all slots to renderers
* refactor: pass `slots` as top-level props
* test: add named slot test for frameworks
* fix: nested hydration, slots that are not initially rendered
* test: add nested-recursive e2e test
* fix: render unmatched custom element children
* chore: update lockfile
* fix: unrendered slots for client:only
* fix(lit): ensure lit integration uses new slots API
* chore: add changeset
* chore: add changesets
* fix: lit slots
* feat: convert dash-case or snake_case slots to camelCase for JSX
* feat: remove tmpl special logic
* test: add slot components-in-markdown test
* refactor: prefer Object.entries.map() to for/of loop
Co-authored-by: Nate Moore <nate@astro.build>
* update examples
* add initial integrations
* update tests
* update astro
* update ci
* get final tests working
* update injectelement todo
* update ben code review
* respond to final code review feedback
