Disable broadcasting migration events and bump version

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@extollo/lib",
-  "version": "0.9.0",
+  "version": "0.9.1",
   "description": "The framework library that lifts up your code.",
   "main": "lib/index.js",
   "types": "lib/index.d.ts",

src/orm/migrations/events/MigrationEvent.ts

@@ -1,5 +1,6 @@
 import {Migration} from '../Migration'
 import {BaseEvent} from '../../../support/bus'
+import {Awaitable} from '../../../util'
 
 /**
  * Generic base-class for migration-related events.
@@ -10,4 +11,8 @@ export abstract class MigrationEvent extends BaseEvent {
     ) {
         super()
     }
+
+    shouldBroadcast(): Awaitable<boolean> {
+        return false
+    }
 }