Drop support for old browsers (e.g. IE11)

package.json

@@ -91,7 +91,7 @@
 	"babel": {
 		"presets": ["@babel/env"]
 	},
-	"browserslist": ["last 3 versions", "> 1%", "IE 11"],
+	"browserslist": ["defaults", "not IE 11", "not op_mini all"],
 	"release-it": {
 		"git": {
 			"changelog": "auto-changelog --stdout --commit-limit false --sort-commits date-desc --unreleased --template https://raw.githubusercontent.com/release-it/release-it/master/templates/changelog-compact.hbs",