Iosevka/changes/6.0.0-preview.3.md

• [Breaking]: The grades for width is updated to make the unit width of Extended subfamily being 0.6em.
• [Breaking]: Made serifed variants of X, Y, Z, x and z selectable via variant selector (#939).
• [Breaking]: Reorganize variants of A, B, D, J, X, Y, Z, d, x and z.
• Update SS02 and SS16 to better reflect their source fonts (#939).
• Remove unnecessary serifs of Slab Italic Small Cyrillic KA (#938).
• Add flat-hook variants of J (#940, #945).
• Add flat-arc parenthesis (#941).
• Fixed broken shape of Motion Serifed Cyrl/Shcha (#944).
• Add vertical-sides variants of W and w (#950).
• Add cursive capital Z (#951).
• Add flat-hooked Long S and Eszet (#952).
• Add slant-sided M (#953).