[ ] I linked all related issues and PRs I could find (no links if there are none).
[ ] If this PR changes anything about the main math_keyboard or example package
(also README etc.), I created an entry in CHANGELOG.md (## UPCOMING RELEASE if the change
on its own is not worth an update).
[ ] If this PR includes a notable change in the math_keyboard package, I updated the version
according to Dart's semantic versioning.
[ ] If there is new functionality in code, I added tests covering all my additions.
Description
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Related issues & PRs
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Checklist
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If [...]items that do not apply to your PR.math_keyboardorexamplepackage (also README etc.), I created an entry inCHANGELOG.md(## UPCOMING RELEASEif the change on its own is not worth an update).math_keyboardpackage, I updated the version according to Dart's semantic versioning.