LCH and Lab color values

The `lch()` and `lab()` color functions are based on the CIE LAB color space, representing colors in a way that closely matches human perception and provides access to a wider spectrum of colors than offered by the usual RGB color space.

Spellcheck attribute

Attribute for `input`/`textarea` fields to enable/disable the browser's spellchecker.

batterymanager api: `levelchange` event

htmlelement api: spellcheck

paymentresponse api: `payerdetailchange` event

performancenavigationtiming api: criticalchrestart

selection api: selectallchildren

types: <color>: `oklch()` (oklch color model)

html element: textarea: spellcheck

html attribute: spellcheck