Add scale property as unitless

[justinfernald]

What:

Added scale as a unitless property.

Why:

Since scale is a fairly new well adopted property and does not take px value but instead will take unitless values or percentages and it strange to put: scale: "2" MDN: https://developer.mozilla.org/en-US/docs/Web/CSS/scale W3: https://www.w3.org/TR/css-transforms-2/#propdef-scale

How:

These changes were implemented by modifying the unitless package

Checklist:

• [ ] Documentation N/A
• [ ] Tests N/A
• [x] Code complete
• [x] Changeset

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🦋 Changeset detected

Latest commit: 3ad87d186c82d03426d7a063cf93205147105d87

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 2 packages

| Name | Type | | ------------------ | ----- | | @emotion/unitless | Minor | | @emotion/serialize | Patch |

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[justinfernald]

Note that React also has this implemented for their style prop: https://github.com/facebook/react/pull/25601