Pass compiler version in dev events

rollup.config.js

@@ -60,6 +60,9 @@ export default [
 			],
 			external,
 			plugins: [
+				replace({
+					__VERSION__: pkg.version
+				}),
 				ts_plugin,
 				{
 					writeBundle(bundle) {

src/runtime/internal/dev.ts

@@ -2,7 +2,7 @@ import { custom_event, append, insert, detach, listen, attr } from './dom';
 import { SvelteComponent } from './Component';
 
 export function dispatch_dev<T=any>(type: string, detail?: T) {
-	document.dispatchEvent(custom_event(type, detail));
+	document.dispatchEvent(custom_event(type, { version: '__VERSION__', ...detail }));
 }
 
 export function append_dev(target: Node, node: Node) {