v5.0.0-beta.5

• switched from stylis to @emotion/stylis (#2640); mostly a bundle size win and a minor performance boost

• removed "stylisOptions" prop from StyleSheetManager, but reimplemented the ability to remove vendor prefixes as "disableVendorPrefixes"

• disable ComponentStyle staticness in non-production modes (#2634); should help fix some cases where className mismatches happen in runtimes like next.js dev mode

• lower the threshold for the "too many classes" warning to 50 (#2622); the previous limit was 200, probably much too high