[REL] v2.0.0-beta-15

# v2.0.0-beta-15

Notes

- fix: lifecyle_hooks: correctly wrap errors in async code
- imp: use a custom error class for all errors thrown by owl
- fix: package.json: remove browser value
- ref: component_node: slightly simplify code

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@odoo/owl",
-  "version": "2.0.0-beta-14",
+  "version": "2.0.0-beta-15",
   "description": "Odoo Web Library (OWL)",
   "main": "dist/owl.cjs.js",
   "module": "dist/owl.es.js",