v0.15.8

🎉 This release contains work from a new contributor! 🎉

Thank you, CJ (@dev-cj), for all your work!

🐛 Bug Fix

• fix(theme-ui): add transitive peer dependency on @emotion/react #2421 (@hasparus)

🏠 Internal

• components: Added indeterminate checkbox #2419 (@dev-cj)
• docs: Fix typo in "switch" #2420 (@dev-cj)

Authors: 2

• CJ (@dev-cj)
• Piotr Monwid-Olechnowicz (@hasparus)