v4.2.2

Patch release.

• Keyboard avoidance: when a comment field inside the widget is focused, the WebView now shrinks to the space above the on-screen keyboard and scrolls the focused field into view, so it's no longer hidden behind the keyboard. On by default; pass disableKeyboardAvoidance to opt out.

Example app (not shipped in the package): fixed the blank widget in the showcase (ScrollView host), a list key warning, the oversized tab bar, and dark-mode demo.