0.21.0

What's Changed

• fix launch link when no windows are open by @brindy in #470
• new tab tweaks by @brindy in #471
• Open feedback form upon tapping "Send Feedback" in the About page by @ayoy in #473
• Improvements to data clearing by @bwaresiak in #467
• Pre-beta copy updates by @samsymons in #472
• First reponder issues when switching tabs by @tomasstrba in #464
• add alternate menu item for paste and match with style by @brindy in #474

Full Changelog: 0.20.1...0.21.0