v0.2.0

Commits:

• Add Table of Contents in README 282467a
• Add link to example app on CodeSandbox in README 505b93f
• Improve example app layout and loading experience 51e046d
• Upgrade suspendable to 0.3.0 8de1b56
• Add hooks to API links 248e75b
• Refine Usage section af7156f