0.9.0

Breaking: requires an ES2020-capable JavaScript engine (Node.js 12 or newer) and the Amber packages that share that floor; the es6-promise polyfill is no longer shipped.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

package.json

@@ -2,7 +2,7 @@
   "name": "@ambers/contrib-web",
   "title": "Amber Smalltalk's original Web library",
   "description": "Amber Smalltalk's original Seaside-inspired DOM manipulation library",
-  "version": "0.8.2",
+  "version": "0.9.0",
   "homepage": "https://lolg.it/amber/amber-contrib-web",
   "repository": {
     "type": "git",